The earliest appearance of platyrrhines occur in fossil records comes from the late Oligocene in South America country is the currently most accepted of the four possible explanations for the origin of platyrrhines.
The Platyrrhine Fossil Record contains fossils of new world monkeys, which are few in comparison to the richness of Neotropical wildlife today and the generally strong fossil record for other South American animals. The late Oligocene in South America is when platyrrhines first emerge in the fossil record. 5-10 mya after the Fayum primate.
The earliest primates identified so far date from the Oligocene, although rodent remains from the late Eocene were recently uncovered in Chile, raising the possibility that there may be older monkey fossils in South America as well. These Patagonian fossils, like the early stem platyrrhines from Bolivia, are broadly connected to New World monkeys, though affinities to contemporary subfamilies are difficult to ascertain.
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In some species of plants, mutations can cause a plant to have different patterns on their leaves, such as gold edges or whitestripes. Plants with different patterns grow to the same size and produce offspring with similar patterns. However, these plants canhave high mutation rates. As a result, a group of related plants can exhibit many patterns.Which of the following statements does this example support?OA. A mutation that is not helpful to an organism's survival will not be passed on.OB. A mutation that has neutral effects on an organism's survival can be passed on to offspring.OC. Organisms increase their rate of mutations to add genetic variation to their species.OD. Organisms choose not to produce proteins from harmful mutations.ResetSubmit
We have to consider that not all inherited mutations are bad for us, as we can see in the example of the exercise. The statement that better describe this condition is the second one, the B option: "a mutation that has neutral effects on an organism's survival
Hey guys facing a bit of difficulties on these 5 questions, could someone help? That'd be appreciated thanks.
Answer:
accumulation is the answer
in drosophila, a key step in initiating the dorsal-ventral body axis involves follicle cells building a signal into the eggshell. which follicle cells create a functional signaling molecule?
The follicle cells create a functional signaling molecule is ventral follicle cells.
What is a dorsal-ventral axis?The dorsal/ventral axis is defined as a line that is perpendicular to the anterior/posterior and left/right axes. An organism's dorsal end is located on its top or back. The ventral end of an organism is defined by its bottom or front side.
In Drosophila embryos, the formation of the dorsal-ventral pattern is dependent on a signaling mechanism in which a putative extracellular ligand released into the area around the embryo known as the perivitelline space binds to the Toll receptor.
The focus protein in the dorsoventral polarity development of the developing fly is called dorsal (DL). It is a transcription factor that regulates the expression of zygotic genes necessary for early development along the dorsoventral axis.
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Give a detailed overview of your topic including their origin story (Hyperion greek mythology)
Hyperion was one of the twelve Titan kids of Gaia (Earth) and Uranus in Greek mythology (the Sky). Helios (the Sun), Selene (the Moon), and Eos are the products of Hyperion and his sister, the Titaness Theia (the Dawn).
Where does Greek mythology come from?Greek creation legend. The Ancient Greeks held the view that the world was initially in a state of chaos, or complete emptiness. Gaia (Mother Earth), Uranus (the sky), and other ancient gods (known as primordials), including Pontus, appeared out of thin air (the primordial god of the oceans).
Hyperion assisted his siblings in overthrowing their father, Uranus, and later rose to become one of the Titan pillars, notably the East pillar, which supports the sky in the universe. He is also credited with establishing the sun and moon cycles for his offspring.
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enzymes: group of answer choices are composed primarily of polypeptides, which are polymers of amino acids. can bind prosthetic groups such as metal ions that participate in enzyme reactions. have defined structures. bind their substrates at active sites.
Polypeptides, which are amino acid-based polymers, make up the majority of enzymes. can bind substituted groups, such as metal ions involved in enzyme activities. They have established structures Active sites are where they bind their substrates.
A polypeptides is a non-branched, continuous chain of amino acids that are bonded together by peptide bonds. By joining the carboxyl group of one amino acid to the amine group of the following amino acid, the peptide bond creates an amide.
As the constituents of muscles, bones, hair, and nails as well as the building blocks of enzymes, antibodies, muscles, and connective tissue, proteins play a significant role in biology. Because they include shorter chains of amino acids than polypeptides, peptides differ from polypeptides.
The protein consists of one or more polypeptide chains. Smaller subunits or amino acids are joined to form each polypeptide chain. Proteins are composed of amino acids and polypeptides, which are the building blocks of proteins.
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A person can have hundreds of different type of cells because:different cells result from genetic variation in meiosis.different cell types have different genes.different cell types all have the same genes but have different genes active.None of these choices is correct.
Humans have specialized cells in the body. Each cell type performs a unique function. Humans have different type of cells with different structures and functions.
All the cells in a human's body contain the same DNA. However, the human body is composed of many different types of cells. Because of gene regulation, each cell type possess a different set of active genes although all the cells of the body contain the same DNA.
Answer - different cell types all have the same genes but have different genes active.
what is the expected frequency of heterozygotes if the population is in hardy-weinberg equilibrium? researchers studying a small milkweed population note that some plants produce a toxin and other plants do not. they identify the gene responsible for toxin production. one allele (t1) codes for an enzyme that makes the toxin, and another allele (t2) codes for a nonfunctional enzyme that cannot produce the toxin. heterozygotes produce an intermediate amount of toxin. the allele frequency of t1 is determined to be 0.6 and the allele frequency of t2 is 0.4. what is the expected frequency of heterozygotes if the population is in hardy-weinberg equilibrium? 0.5 0.48 0.65 0.25
If a population has two alleles at a locus and the allele frequencies are p and q, then the genotype frequencies are p2, 2pq, and q2.
0.48 is the expected frequency of heterozygotes if the population is in hardy-weinberg equilibrium.
What are the expected frequencies for Hardy-Weinberg equilibrium?If a population has two alleles at a locus and the allele frequencies are p and q, then the genotype frequencies are p2, 2pq, and q2. Once a population is in Hardy-Weinberg equilibrium, the frequency distribution does not change from generation to generation.In populations that are not evolving, Hardy-Weinberg Equilibrium (HWE) is used to estimate the number of homozygous and heterozygosity terozygous variant carriers based on allele frequency. Expected (Hexp = 2pq) for a 2-allele system as a function of allele frequency, p. It is worth noting that heterozygosity peaks at 0.5 when the allele frequencies are equal (p=q).
H exp = 2pq = 2 x .4 x .6 =0.48.
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Biologists conclude that sardine fish form tight clusters
called "bait balls, such as the one shown in the image,
because this behavior protects them from predators.
8
Answer:
that's cool
never knew
Anyways thanks
The statement; "Biologists conclude that sardine fish form tight clusters called "bait balls, such as the one shown in the image, because this behavior protects them from predators." is true
What are the predators?Bait ball behavior is not limited to sardines; other small schooling fish, such as herring, anchovies, and mackerel, also exhibit similar clustering behaviors for similar protective reasons. The formation of bait balls is a remarkable example of collective behavior in the animal kingdom and serves as a vital survival strategy for these small fish species.
Biologists have observed that sardine fish (and other small schooling fish) form tight clusters known as "bait balls" as a defense mechanism against predators.
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Missing parts;
Biologists conclude that sardine fish form tight clusters
called "bait balls, such as the one shown in the image,
because this behavior protects them from predators.
T/F
PLSSS HELP IF YOU TURLY KNOW THISS
Answer:
C some plants
Explanation:
in drosophila, an ncrna called rox is involved in dosage compensation. rox is part of the msl complex, which binds to the x chromosome and recruits histone-modifying enzymes to the chromatin. rox is required for the msl to bind to the x chromosome. what function is this ncrna playing?
In Drosophila, an ncRNA plays a crucial role in directing Rox RNA and its non-coding genes for protein production.
RoX RNA can be a non-coding RNA (ncRNA) shown inside the male-specific dangerous (MSL) complex and is required for sex estimation compensation in Drosophila.
This can be fulfilled by the MSL complex official to the X chromosome and inciting histone H4 lysine 16 acetylation and licenses for the course of action of euchromatin. These ncRNAs were, to start found in RNA removed from neuronal cells.
Two roX RNAs have been recognized inside the MSL complex from Drosophila melanogaster and have shown up to be directed over different drosophila species.
The two roX RNAs, known as roX1 and roX2 have been shown up to differentiate in the basic course of action and course of action length but despite these contrasts, they both contain an MSL definitive area and are essentially redundant.
Cloning roX qualities and resulting gathering course of action from a few unmistakable drosophila species recognized some directed districts and it was moreover taken note that roX RNA is because it appeared in male flies.
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Use the image and answer the questions. Thank you!
The transport mechanisms in the cell are osmosis, diffusion, facilitated diffusion, endocytosis, exocytosis, and molecular pumps. The molecule they transport are found in the attachment
What are the mechanisms of transport in cells?Some of the transport mechanisms of the cell include the following:
Diffusion - this is the movement of molecules of solids, liquids of gases down their concentration gradient.Facilitated diffusion is the movement of molecules through protein channels down their concentration gradient.Osmosis - this is the movement of water molecules across semi-permeable membranes.Other transport mechanisms are through molecular pumps, endocytosis, and exocytosis involving pumps.
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There are two DNA strands in the picture of question 1. These strands run in opposite directions from 5' to 3' we call these....
Answer: Antiparallel
Explanation:
DNA is composed of two strands of nucleotides. The strands each run from 5' to 3' and run in antiparallel, or opposite, directions from one another.
explain what would happen if the researchers did not include the promoter in the dna sequences added to the caldi genome. would the acetaldehyde and alcohol dehydrogenase enzyme be produced in the caldi cells?
No, the acetaldehyde and alcohol dehydrogenase enzymes would not be produced in the caldi cells.
What is DNA?
Deoxyribonucleic acid is indeed a polymer made of two polynucleotide chains which coil around one another to form a double helix and which contains the genetic material necessary for all known organisms, including many viruses, to develop, function, grow, and reproduce. Nucleic acids are one of the four main categories of macromolecules that are necessary for all known forms of life, along with proteins, lipids, and complex carbohydrates (polysaccharides). Because the two DNA strands are made up of simpler monomeric units called nucleotides, they are referred to as polynucleotides.
A gene's promoter is the region of DNA where transcription first starts. In expression vectors, promoters are crucial because they control how RNA polymerase binds to DNA. RNA polymerase changes DNA into mRNA, which is then translated into the a useful protein.
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if the original dna sequence is 3' - gtt tac ctc tcc gac atc - 5' [template strand] 5' - caa atg gag agg ctg tag - 3' [coding/non-template strand] a point mutation occur and change the sequence to 3' - gtt tac atc tcc gac atc - 5' [template strand] 5' - caa atg tag agg ctg tag - 3' [coding/non-template strand] what type of mutation is this?
The given type of mutation is nonsense mutation which results from point mutation.
A nonsense mutation in a DNA sequence causes a premature stop codon, also known as a nonsense codon, in the transcribed mRNA as well as a shortened, ineffective, and typically nonfunctional protein product.
As was mentioned previously, a nonsense mutation happens when a stop codon replaces an amino acid's codon. A shortened and typically nonfunctional protein is the result of this mutation. By altering a tRNA molecule's anticodon sequence such that it recognizes the stop codon instead of the start codon, such a deficiency may be at least partially repressed.
Therefore, the given type of mutation is nonsense mutation which results from point mutation.
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Question: Why don't birds get electrocuted when they are on an electric wire.
I need answer ASAP Thank You
Answer:
Birds sitting on an electric wire don't touch the ground, so any electricity that’s flowing stays in the power line and they are not electrocuted.
help please i will give brainliest and 80 points!!
Throat to esophagus in humans deor ⇒Heart to lungs medial⇒ Throat to esophagus in cats anterior⇒Ear to eye dorsal⇒ Hair to skeletal muscle deep⇒ Abdomen to thorax inferior 4⇒ Thumb to ring finger superior.
What is the main function of skeletal muscle?The most common of the three forms of muscles in vertebrates is skeletal muscle, often called as voluntary muscle. Fibrous connective tissue that connects skeletal to the bones, and these muscles are also what move bodily parts in relation to one another.
What substances make up skeletal muscle?Millions of muscle fibers are wrapped in collagenous sheaths to form each skeletal muscle. Fasciculi are indeed the individual bundle of muscular fibers that make up skeletal muscles. The definition of the concept is indeed the outermost connective tissue sheath that encircles the entire muscle.
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The complete question is -
Use directional terminology to describe these relationships.
Throat to esophagus in humans_____________
Heart to lungs___________
Throat to esophagus in cats_____________
Ear to eye_______________
Hair to skeletal muscle_____________
Abdomen to thorax_____________
Thumb to ring finger___________
So when the throat meets the esophagus through the windpipe in your lower body parts, the answer does not come out
More energy can be released from fat molecule than from glucose molecule because the fat molecule contains more
Answer:
chemicals bonds
Explanation:
the more bonds, the more energy released!
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How is food moved through the esophagus and small intestine?
(ANSWER IF 100 PERCENT SURE THIS IS FOR A TEST)
A. The process of peristalsis which is small muscle contractions squeeze food down the tube.
B. Peristalsis is when long muscles the size of the organ open the tube up for food to slide through.
C. The food gets pushed through, as you eat more it pushes the other food along.
D. Food is moved by the pull of gravity through the tubes in the body.
I'm pretty sure its either A or B but I don't know which one.
Answer: A. The process of peristalsis which is small muscle contractions squeeze food down the tube.
Explanation:
The smooth muscle that runs down the esophagus functions in a wave like pattern to push food down.
Select the correct order of the final three stages in the lytic cycle:
The correct order of the final three stages in the lytic cycle is Assembly > Transduction > Release
What is a lytic cycle ?One of the two viral reproduction cycles, the other being the lysogenic cycle, is the lytic cycle. The infected cell and its membrane are destroyed as a result of the lytic cycle. Violent phages are bacteriophages that exclusively use the lytic cycle.
The lytic cycle contains four steps: infecting a host (a process known as exposure), transferring genetic information into a cell, exploiting the cell's metabolic processes to produce more viruses, and ultimately weakening the cell walls until the host cell lyses, or bursts open due to excessive internal pressure.Learn more about Lytic cycle here:
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How do you correctly interpret and construct a line graph and a bar graph?
The line segments' varying slope draws attention to changes, and patterns. Changes in the line for set of data to find trends and patterns. Lines of numerous measurements share the same trend and patterns.
What is bar graph explain?Information is graphically represented in a bar graph. To represent value, it makes use of bars that stretch to various heights. Vertical bars, horizontal bars, grouped bars (several bars that compare values in a category), and stacked bars can all be used to construct bar graphs (bars containing multiple types of information).
Why do we use bar graph?It is straightforward and quick to compare sets of data between several groupings using a bar diagram. The graph has discrete values on one axis and categories on the other. To demonstrate the connection between the two axes is the aim. Bar charts can also show significant alterations in data over time.
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Which is the graph of the linear inequality 2*-3y<12
For the graph of the linear inequality 2*-3y<12, Based on the graph, Option 3 is the one that should be chosen.
This is further explained below.
What is graph?Generally, The graph of the
Inequality 2 x-3 y<12
Solve for y,
2 x-12<3 y
[tex]y > \frac{2}{3} x-4[/tex]
Now that we have the x-intercept and the y-intercept, we can draw the graph of the equation.
The x-intercept is when y equals zero,
2/3x-4=0
2/3 x=4
x=6
the y-intercept is when x=0
2/3(0)-4=y
y=-4
Therefore, the graph must pass between points (0,-4) and (6,0).
Now, we can determine that the area of the graph is
In conclusion,
Put x=0 and y=0
2(0)-3(0)<12
0<12
This is correct. Therefore, the area is moving toward its source.
The line is not continuous since the inequality does not contain an equal sign.
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what are some examples of mesophytes xerophytes
Answer:
Plants adapted to dry, hot and arid climates are considered xerophytes. Examples include the entire yucca family, acacia trees, and mesquite trees.
Since mesophytes prefer moist, well drained soils, most crops are mesophytes. Some examples are corn (maize), cucurbits, privet, lilac, goldenrod, clover, and oxeye daisy.
crossing over between sister chromatids does not result in recombination of genetic material while crossing over between non-sister chromatids does because
Crossing occurs between sister chromatids that does not help in recombination because sister chromatids have the similar alleles, on the other hand non sister chromatids have different alleles .
Crossing over mostly occurs in-between prophase I and metaphase I it is the place were two homologous non-sister chromatids combine with each other and share their genetic material in order to form two recombinant chromosome sister chromatids.
Crossing over that takes place between sister chromatids, are genetically identical, such crossing over will not result in genetic recombination. After crossing over, the sister chromatids for each chromosome that are no longer identical to one another.
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Which unit represents speed?
A. newtons
B. miles per hour
C. joules
D. kilometers per second
Answer: B. miles per hour
Explanation:
A is wrong because it is a unit of physic.
C is wrong because it is unit for energy
D is wrong because second is not a unit for speed
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Why is cell division a necessary part of maintaining multicellular life? Help asap giving brainliest!!!
Answer:
In multicellular animals, mitosis is required to maintain a consistent number of chromosomes in all body cells because it produces diploid daughter cells with genetic makeup that is typically identical to that of the parent cell. Mitosos is responsible for the multicellular organisms' growth. As a cell grows, the ratio between the nucleus and cytoplasm is distributed. Therefore, restoring the nucleo-cytoplasamic ratio is crucial for cell division. Cell repair is a very important mitosis-related function. Plants grow continuously throughout their lives as a result of mitotic divisions in the meristametic tissues, the apical and lateral Meristems.
Explanation:
what is cellular respiration and why it is essential for all living cells?
Answer:
Cellular respiration is a process in which glucose is broken down to produce ATP, or energy. This same energy is essential to all processes within the cell, powering almost everything.
I'm sorry I couldn't provide a better explanation :(((
when a cluster of cells in the ovum splits off within the first two weeks after fertilization and forms two nearly identical zygotes, the result is .
Monozygotic twins occur when a single zygote or fertilized egg splits apart in the first two weeks of development.
In monozygotic twins, the blastocyst then splits and develops into two embryos. Zygotic splitting occurs between second and sixth day when the zygote divides, in two parts, each zygote then develop into an embryo, leading to identical twins .
Identical, or monozygotic, twins may or may not share the same amniotic sac, depending on how early the single fertilized egg divides into two parts. Factors that increase the chance of twins include are dependency on high amounts of dairy foods, crossing the age of 30, and conceiving while breastfeeding.
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A cell has the following molecules and structures: DNA, enzymes, ribosomes, cell membrane and mitochondria. It could be a cell from:
A) Any type of cell
B) A bactetium
C) An animal cell but not a plant cell
D) Either a plant or an animal cell
E) A plant cell but not an animal cell
Answer:
D
Explanation:
A cell has the following molecules and structures: enzymes, DNA, ribosomes, plasma membrane and mitochondria, it could be a cell from
a) a bacterium.
b) an animal, but not a plant.
c) a plant, but not an animal.
d) a plant or an animal.
e) any kind of organism.
Cells: Prokaryotic vs Eukaryotic and Animal vs Plant
Cells are generally broken into two basic categories based on their structures. Cells that are prokaryotic are smaller and less complex than eukaryotic cells. Prokaryotic cells differ from eukaryotic cells because they do not contain membrane-bound organelles. On the other hand, eukaryotic cells have features like a nucleus and mitochondria as well as a long list of other organelles. Bacteria are a typical example of a prokaryote. Plants and animals are examples of eukaryotes.
Animal cells and plant cells are similar because they are both types of eukaryotic cells. The main differences are that plant cells have other specialized parts not found in animal cells, such as the cell wall and chloroplasts where photosynthesis takes place.
WHAT'S THE ANSWER??
Why can an individual be a carrier but not have the disorder?A) Because it is not expressedB) Because it does not effect the individual visiblyC) Because the individual received therapy to overcome the disorderD) Because the individual received surgery to get rid of the disorder
When a genetic disorder is not manifested means that even when is coded in the genes is not expressed, this can be due to a different factor, being the main reason that is a recessive gene masqued by the healthy dominant gene. Therefore the correct answer is letter A.
