Answer:
Which evidence supports the hypothesis that four-limbed animals came from fish? -DNA analysis shows that fish are tetrapods' closest relatives. -The fossil record shows more and more tetrapod-like fish before the appearance of tetrapods about 365 million years ago.
Most fish have flat heads. However, it's crucial to remember that the earliest known tetrapods, Acanthostega and Ichthyostega, had flat heads. The discovery of a fish with a flat head was a strong cue that this fossil was a part of the gradual transition from fish to tetrapods.
What evidence supports four-limb animals came from fish?The appearance of tetrapods about 365 million years ago, the fossil record records fish that were similar to tetrapods. Human embryos have gill slits, while fish and animals with four legs have embryos that are comparable to those of fish.
Ancient animal fossils have revealed how prehistoric life emerged from the ocean and made its clumsy initial steps toward the development of four-legged land animals.
Therefore, Fish were the closest relatives of tetrapods, according to DNA study. Before tetrapods appeared about 365 million years ago, the fossil record reveals an increasing number of fish with tetrapod-like characteristics.
Learn more about animals here:
https://brainly.com/question/6398967
#SPJ12
Which is an example of a simile? put O His mother was trying to get him into the car. + O Moments later, Grandma appeared with a white box in her hand. O The sneakers were as red as a fire hydrant. 0 Tyrell spent the rest of the day playing basketball with a smile on his face.
Answer:
O The sneakers were as red as a fire hydrant.
Explanation:
The high productivity of American agriculture is exemplified by _______. A. Low crop yields per farm worker b. High crop yields per farm worker c. The small cultivated area per inhabitant d. The small cultivated area per farmer Please select the best answer from the choices provided A B C D.
Answer:
B
Explanation:
Edge 2022, trust the process
Answer: B
Explanation:
DNA sequencing using the Sanger method requires ________.
A) template, primer, DNA polymerase, dNTPs, ddNTPs.
B) template, primer, DNA polymerase, rRNA, dNTPs, ddNTPs.
C) template, primer, DNA polymerase, mRNA, dNTPs.
D) template, primer, DNA polymerase, mRNA, dNTPs, ddNTPs.
E) none of the above.
Answer:
Sanger sequencing requires a DNA template, a sequencing primer, a thermostable DNA polymerase, nucleotides (dNTPs), dideoxynucleotides (ddNTPs), and buffer. Thermal cycling in the sequencing reactions amplifies extension products that are terminated by one of the four ddNTPs.
Explanation:
Explain how bacteria in the human intestine help maintain health.
Major organs form and cells continue to divide in the __________ stage. A. Embryo B. Fetus C. Blastocyst D. Zygote Please select the best answer from the choices provided. A B C D.
The prenatal is the stage of the development of the foetus from the fertilized cells towards the whole organism. In the embryo stage, the cells divide and the organs are formed.
What are the stages of prenatal division?In the embryo stage of the foetus development the formation of the cells and their division occurs, it is the early stage of the development where the multicellular diploid organism results in the formation of the distinct organs with specialized functions.
Blastocysts are the early group of cells formed after zygote formation and is important for the implantation in the uterus lining.
A zygote is the immediate result of egg and sperm fusion. This cell is the earliest cell that is diploid and is formed just after fertilization.
Therefore, option A. embryo is the stage in which the formation of the organs occurs.
Learn more about prenatal stages here:
https://brainly.com/question/7535058
Answer:
It’s A, Embryo
Explanation:
it is the step the organs form and shape as we know them today and the organs start to prepare to function properly.
ur welcome :)
brainliest please?
Which gland of the endocrine system is located near the brain?.
Answer:
Pituitary gland
Explanation:
Which two strategies can a rattlesnake use to conserve energy and regulate its body temperature
Answer:
Many snakes prefer to move around during the day, when they can alternately bask in the sun's heat and slither into shadows to regulate their body temperatures. As cold-blooded animals, or ectotherms, snakes rely on the environment to keep their bodies at optimum operating temperatures.
Explanation:
The two strategies that a rattlesnake use to conserve energy and regulate body temperature are- 1.) Snake can move into the shade 2.) It can sweat to evaporate the water off the skin to lower the temperature. Options A and D are correct.
Behavioral thermoregulation- Rattlesnakes are ectothermic. This means that their body temperature is mainly regulated by the environment they live in. Rattlesnakes exhibit thermoregulatory behaviors to conserve energy and regulate body temperature.
Rattlesnakes enter torpor when resources are limited or the environment is unfavorable. During torpor, the rattlesnake’s metabolic rate slows down, allowing it to conserve energy. This process slows down the snake’s physiological processes and lowers its body temperature.
This process can occur during hibernation in cold climates or when the environment is unfavorable, such as during drought or when there is a lack of food. This allows the rattlesnakes to adapt to challenging conditions with minimal energy expenditure.
Therefore, the correct options are options A and D.
To learn more about the snake, refer to the link:
https://brainly.com/question/30247016
#SPJ4
Your question is incomplete but most probably your full question was-
Which two strategies can a rattlesnake use to conserve energy and regulate its body temperature?
A) The snake can move into the shade in order to lose the thermal energy of the environment and lower its body temperature.
B) The snake can shiver in order to increase its metabolism and raise its body temperature.
C) The snake can move into the sun or sit on a warm rock in order to gain thermal energy and raise its body temperature.
D) The snake can sweat in order to produce water that will evaporate off its skin and lower its body temperature.
The meiotic process of cell division that occurs in the male is called.
[tex] \huge\sf{ANSWER}[/tex]
[tex] \red \implies[/tex] The meiotic process of cell division that occurs in the male is called Spermatogenesis.
#CarryOnLearning_crstnjms_
What keeps a satellite in orbit around Earth? A. Earth’s gravity B. Earth’s atmosphere C. Earth’s solar system D. Earth’s magnetic field\
Answer:A
Explanation:earths gravity keeps it in orbit around the earth
Human blood types are multiple allelic. If you cross a heterozygous A person with a heterozygous B person what are the potential blood type of their offspring?
USE PHOTO!!
Initiation elongation and termination are the three main steps in:.
Answer:
Transcription
How can sickle cell disease
sufferers inherit sickle cell?
Answer:
hi!
Explanation:
If 2 parents are carrying sickle cell with them, if there child receives 1 different copy from each of the parents, they have sickle cell. but those parent's who are carrying the sickle cell do not get it, they can only pass it down. So if a child gets a Sickle cell gene (S), and a sickle cell gene (A) they get sickle cell.
I hope this helped! If it didnt, ill fix my answer! just let me know!
What is a limiting factor whose effects are dependent on a population’s density?
1. habitat loss
2. law of the minimum
3. density-dependent factor
4. density-independent factor
Answer:
A
Explanation:
Where does the light-dependent stage of photosynthesis occur in the plant cell?.
he light-dependent reactions take place in the thylakoid membranes in the granum, within the chloroplast.
Please Help!!!!! I'll give Brainiest if u can help me!!! ASAP
Answer:
i would say the last one
Explanation:
you can see there is no green dots so the population reproduces with smaller gene pool
What is the relationship between photosynthesis and cellular respiration?
a. The outputs of photosynthesis are the inputs of cellular respiration
b. The inputs of photosynthesis are the outputs of cellular respiration
c. Trees only do photosynthesis . Animals only do cellular respiration . They both need eachother
d. There isn't a clear relationship
Answer:
A
Explanation:
Photosynthesis transforms light energy into chemical energy stored in glucose, and cellular respiration releases the energy from glucose to build ATP.
A population of trout in a lake has significantly declined over the past year. The main source of food for the fish in this lake are aquatic insects. Due to poor climate conditions, there are significantly fewer insects and thus, not enough food to sustain the population of trout in the lake. Trout is a food supply for larger fish in the lake and without enough trout, other fish are negatively impacted in the lake. What is the problem?
a. Trout population has increased
b. Insect population has increased
c. Insect population has decreased
d. Larger fish population has increased
The decline in the overall population of trout and larger fish is because the Insect population has decreased.
What is a population?A population is a group of organisms of the same species living in the same habitat.
Population of organisms is affected by;
availability of waterspace food and nutrients predators climate changeSince the population of trout is directly affected by the number of insect species, the decline in the overall population is because the Insect population has decreased.
Learn more about population at: https://brainly.com/question/746835
Why is the low-tide is the most populated level of the intertidal zone
Answer: Mainly because of the protection by the water
Explanation:
the low zone is never really above the surface and in that sense life is more common there with the water as a protection
What is the most abundant greenhouse gas in the atmosphere?.
Answer:
the answer is Water vapor
Why do homologous chromosomes look the same, but may not contain the same information?.
Answer:
Each copy of the homologous pair of chromosomes originates from a different parent; therefore, the copies of each of the genes themselves may not be identical. The variation of individuals within a species is caused by the specific combination of the genes inherited from both parents.
Explanation:
what can we do to minimise overuse of plastic?
Here are some steps :-
AVOID using plastic bottles.Use JUTE BAGS or CLOTH BAGS , instead of plactic.RECYCLE PLASTICS in an useful way.Make your friends, family, neighbors and society aware about "NO TO PLASTIC ".Avoid using DISPOSALS PLASTIC .Minimize the use of PACKED ITEMS.
THESE ARE THE SMALL STEPS WE CAN TAKE TO MINIMISE THE OVERUSE OF PLASTIC, AND PROTECT OUR EARTH .
BUT WE NEED EVERYONE'S SUPPORT TO MAKE THIS BIG CHANGE.
STAY SAFE, STAY HEALTHY AND BLESSED.
HAVE A BLESSED DAY !
THANK YOU !
True or false? Both your eyeballs and stomach cells have the exact same DNA.
DUE TODAY! MARK YOU THE BRAINLIEST!
What biological process is exemplified by a dog panting to release body heat?
A.homeostasis
B.osmosis
C.translation
D.diffusion
Answer:
homeostasis i believe, i dont know
Evaporation happens when a liquid turns into a gas. When you sweat, the liquid on your skin evaporates into the atmosphere to cool you off. When you see a dog panting on a hot day, they are actually increasing evaporation from their tongue and mouth to cool off. Conduction transfers heat through direct contact.
Why does assortment of genes take place in meiosis 1.
Answer:
During meiosis, the pairs of homologous chromosome are divided in half to form haploid cells, and this separation, or assortment, of homologous chromosomes is random. This means that all of the maternal chromosomes will not be separated into one cell, while the all paternal chromosomes are separated into another.
13. What are the products of cellular respiration that are needed for photosynthesis?
sugar and oxygen
carbon dioxide and water
water and sugar
energy and oxygen
Answer:
Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.
If the US modifies techniques for timber management, it is expected that US forests will _______. A. Not be able to meet long term timber needs b. Be able to meet long term timber needs c. Result in deforestation d. Provide increasingly cheaper timber.
If the US modifies techniques for timber management, it is expected that US forests will be able to meet long term timber needs.
Sustainable forest management practices, such as selective logging, reforestation, and conservation measures, can help ensure the long-term productivity and health of forests while also providing for the needs of society.
Adopting these techniques can help reduce the impact of logging on forest ecosystems, prevent deforestation and forest degradation, and promote biodiversity and ecosystem services. Additionally, sustainable timber management can provide economic benefits to communities while protecting the long-term value and productivity of forest resources.
Learn more about timber management, here:
https://brainly.com/question/22799139
#SPJ7
method of improving Sandy soil
★Methods To improve Sandy Soil:
— Work in 3 to 4 inches of organic matter such as well-rotted manure or finished compost.
— Mulch around your plants with leaves, wood chips, bark, hay or straw.
— Mulch retains moisture and cools the soil.
— Add at least 2 inches of organic matter each year.Grow cover crops or green manures.
Answer:
Soil is easily made out of compost which makess the soil healthy
Explanation:
True or False: Aerobic respiration produces much more ATP than fermentation, but the process is slower than in fermentation.
Answer:
True!
Explanation:
Fermentation takes place at an anaerobic state so Compared to respiration the fermentation produces less efficient energy. The breakdown of single glucose during fermentation produces two ATP.
ATP
Adenosine triphosphate
Which organism would the researchers most likely predict to be the most distantly related to eukaryotes?.
Answer:
Organism I (circular chromosomes)
Explanation:
I can eliminate organisms II, III, and IV because these organisms have linear chromosomes therefore making it the most closely related to eukaryotes because they consist of linear chromosomes. My only other choice would be organism I, and since it has circular chromosomes we can conclude that this is the most distantly related to eukaryotes.
The organism I is most likely predicted to be the most distantly related to eukaryotes by the researchers.
What do you mean by Eukaryotes?Eukaryotes may be defined as any cell or organism that possesses a clearly defined nucleus and other cell organelles.
Except for organism I, all other organisms possess a linear set of genetic material, while organism I possess a circular set of chromosomes which is closely related to prokaryotes.
Therefore, the organism I is most likely predicted to be the most distantly related to eukaryotes by the researchers.
To learn more about Eukaryotes and prokaryotes, refer to the link;
https://brainly.com/question/495097
PLEASE HELP!!! A mutation occurred in DNA of a globular enzyme. If the leucine amino acids were found within the active site of the enzyme, describe the effect this change is likely to have on enzymatic function
Answer: See below
Explanation:
It may alter the function of the enzyme and may lose its original structure. Leucine is a hydrophobic amino acid that must be buried within the globular enzyme. If it were found on the active site, it may no longer recognize the substrate and may change the shape of the cell in a way that it will not encounter a water molecule
