If the mating of 2 black guinea pigs produced 29 black and 9 white offspring, the genotypes of the parents would be heterozygous.
Expected phenotype ratio = 3:1 black to white
Expected genotypic ratio = 1 AA:2Aa:1aa
Monohybrid crossingThe mating of 2 black guinea pigs produced 29 black and 9 white offspring. The parents must be heterozygous.
Assuming the allele for the black trait is A while that of the white trait is a. The cross is between Aa and Aa.
Aa x Aa
AA Aa Aa aa
The black allele is assumed to be dominant over the white allele. Thus:
Phenotype ratio = 3:1 black to white.
The ratio of the offspring produced from the mating is 29 black to 9 white, which is roughly 3:1. Thus, the mating is between two heterozygous black individuals.
Expected phenotype ratio = 3:1 black to white
Expected genotypic ratio = 1 AA:2Aa:1aa
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The Gulf of Mexico dead zone that forms each summer at the mouth of the Mississippi River is caused largely by the input of agricultural fertilizers. Many scientists advocate restoring wetlands (as well as creating them) as a strategy to reduce the severity and extent of the dead zone. The idea is that plants in healthy intact wetlands will remove these nutrients from the water (during growth) and prevent their washing into the river and the Gulf of Mexico. List at least two potential benefits to this strategy, as opposed to a more traditional chemical intensive approach such as that used at most waste water treatment plants.
1. Restoring wetlands could be cheaper in the long run, once the ecosystem is restored it maintainace will not be as costly as that of water treatment plants.
2. This strategy also will be benefical for biodiversiy conservation and would bring ecosystems services to surrounding communities.
Briefly summarize the steps of the six natural cycles of earth
Proteins provide transport through the cell membrane as…
There are 2 main types of transportations through the cell membrane, in which both have the ability to utilize proteins to allow substances to enter and leave:
0. Active Transport
,1. Passive Transport
Active transport must have ATP in order to allow the protein to be active for transportation. Passive transport doesn't need energy in order to transport a substance across the membrane.
Answer: Protein channels and carrier proteins.
Explanation:
What causes body water to increase during pregnancy?
People pave over a large field to build a parking Which of the following describes how this action will likely affect the water cycle for this region ?
The rain will be able to run off more quickly on concrete and in a vast field, which will probably cause flooding in both areas.
What is meant by the water cycle?The continual movement of water on, above, and below the Earth's surface is referred to as the water cycle, also known as the hydrologic cycle or the hydrological cycle.
Concrete is less porous than soil, thus the water won't be able to seep back into the soil. The volume of water in subsurface aquifers would decrease as a result.
Additionally, the rain will be able to run off more quickly on concrete and in a vast field, which will probably cause flooding in both areas. Both of these would probably hasten the water cycle and have detrimental consequences for people.
Therefore, the correct answer is option c. Runoff into storm drains increases.
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What are gray matter and white matter, and where are they found?
The gray matter is located in the brain. It is found in the outermost layer of the brain. It is surrounding the cerebrum and is called as cortex of the brain. The white matter is located in the further tissues of the brain or the subcortical. It is found underneath the gray matter. These are all located in the cerebral cortex.
The gray matter facilitates the control movement, memory, and emotions of an individual. The white matter is for learning and brain functions.
Answer:
Gray matter is home to neural cells, axon terminals, dendrites and nerve synapses. It is commonly found in the cerebellum, cerebrum, and brain stem. It gets its name due to its gray color.
White matter is located in the deeper tissues of the brain, and contains nerve fibres, and extensions of nerve cells. A substance called myelin gives white matter its white color.
What are some of the other process performed by organelles inside the cell to maintain a stable environment.
Answer: Harvesting energy, making proteins, and getting rid of waste!
What’s the correct answer answer asap for brainlist
True or False: Blood sugar would be lower than normal if liver cells did not have receptors for glucagon.
The answer to the statement " Blood sugar would be lower than normal if liver cells did not have receptors for glucagon " is true.
Why the blood sugar level decreases when liver cells lack receptors for glucagon?It happens that when the liver cells within our body system is short of it deficient of the
glucagon receptor, it usually, frequently and most of the time results in the decreament of the sugar in the blood volume.
However, the hormone known as the glucagon which is manufactured in the pancreas which is designed to stimulate our liver to release the glucose that is previously stored in the body system to the blood stream. Our body system, when it falls on under secretion or over secretion of certain hormones or other substances, it shift the normal body functioning negatively.
So therefore, the absence of glucagon receptor would lowers the blood glucose levels in the blood stream.
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At what level of protein structure do amino acid chains twist and fold?a) Tertiaryb) primary c) secondary d) Quaternary
The primary structure occurs when the protein structure is only a chain of amino acids, with no folds or twists. Therefore, b) is incorrect.
This primary structure then twists folds in itself, creating the structure that's folded and held in shape by hydrogen bonds. That's the secondary structure, and whats is folded in it is the amino acids. Therefore, c) is the correct answer.
The tertiary structure is a three-dimensional structure, shaped by interactions between the R groups of the amino a cids. To form this structure, the entire secondary structure elements (not the amino acids) are folded together. Therefore, a) is also incorrect.
The quaternary structure is a closely pack arrangement of several protein chains, each with its own primary, secondary and tertiary structure. Therefore, d) is wrong as well.
What type of macromolecule is used in cell membranes for facilitated
diffusion
Answer:
Lipoprotein molecule
Carrier proteins are used in cell membranes for facilitated diffusion.
The movement of molecules in the direction specified by their relative concentrations inside and outside of the cell occurs during facilitated diffusion, just as passive diffusion.
The direction in which molecules move across the membrane is dictated by their concentration gradients and, in the case of charged molecules, by the electric potential across the membrane because there is no external source of energy.
The facilitated diffusion of carbohydrates, amino acids, and nucleosides through the plasma membranes of most cells is caused by carrier proteins. One of the most crucial transport tasks of the plasma membrane is the uptake of glucose, which acts as a key source of metabolic energy. The glucose transporter is a well-studied example of a carrier protein.
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Standard NCES.7.L.2.2- In spiders, having a hairy body is dominant to a bald body. A homozygous hairy spider is crossed with a bald spider. What are the possible phenotypes of the offspring?
Group of answer choices
100% hairy; 0% bald
50% hairy; 50% bald
25% hairy; 75% bald
75% hairy; 25% bald
The hairy genotype is dominant over the carreel, if the spider is homozygous, the possible offspring phenotypes are
100% furry; 0% bald
What is a dominant homozygote?The concept of homozygous represents from genes formed from zygotes, therefore, called "pure". The dominant games, in organisms, are the same, they can be homozygous, they are genes, by Letters: Homos and V, in homozygotes, by letters (BB and V, in homozygotes).
What is the recessive gene?Recessive genes are those that are hidden when paired with dominant genes. For a recessive inherited trait to be apparent in the phenotype, there must be a pair of recessive genes.
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Question 11
You read a news report about a recent large volcanic eruption. It was reported
that the eruption was highly explosive with viscous lava. What type of volcano was
likely responsible for the eruption?
(Hint: the most explosive, dangerous kind)
A cinder cone
B composite
Cshield
The type of volcano was likely responsible for the eruption volcano to its formation would be the composite volcano wherein it usually yields large and violent eruptions.
What is volcano?A volcano has been defined as the hill or mountain or it has an opening in a planet or moon's crust from which molten rock, warm gases, and materials erupt. It has a landform where molten rocks erupt through the surface of the planet and volcano moutains open downwards to molten rocks.
According to Geologists there's are four types of volcanoes and these are lava domes, shield volcanoes, composite volcanoes, and cinder cones.
Therefore, The type of volcano was likely responsible for the eruption volcano to its formation would be the composite volcano wherein it usually yields large and violent eruptions.
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Define gluconeogenesis and lipogenesis. Under what conditions do they predominantly occur?
The process of producing glucose (sugar) from lipid (fat) or protein breakdown products, as well as from its breakdown products is called gluconeogenesis whereas the creation of fatty acids from nonlipid precursors is known as lipogenesis.
Gluconeogenesis predominantly occurs both in the kidneys and the liver, because phosphoenolpyruvate carboxykinase is inhibited by ADP. As a result, gluconeogenesis is encouraged in cells that are abundant in ATP and biosynthetic precursors.
The liver, adipose tissue, small intestine, kidneys, and mammary glands are the primary sites of lipogenesis. Additionally, it happens in blood lipoproteins and the digestive system. It is a metabolic pathway that is activated by the high availability of carbohydrates and is used to break down extra carbohydrates.
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describe how red blood cells are adapted for their function (2 marks)
The adaptations of red blood cells are no nucleus to accommodate more hemoglobin, biconcave shape to be able to pass through extremely small blood vessels, thin cell membrane to let oxygen diffuse faster, and presence of hemoglobin itself, that combines with oxygen to give off its red color.
Which of the following is NOT a function of the circulatory
system?
A. Carrying away wastes from cells to the kidneys for excretion
B. Keeps us hydrated
C. Immune system protection
D. Clotting to prevent blood loss
Answer:
B
Explanation:
immune system protection
3. What did you leam about the effects of salinity on of CO₂ on pH and how that Impa levels?
Answer: When CO2 is absorbed by seawater, a series of chemical reactions occur resulting in the increased concentration of hydrogen ions. This process ...
Explanation:
what types of natural phenomena can cause blooms
What is the genetic make-up of an organism?A) PhenotypeB) AllelesC) GenotypeD) DNA
Solution:
The genotype is the collection of genes of an individual, that is, it is the genetic information that a particular organism possesses. This means that in a broad sense, the term genotype refers to the genetic makeup of an organism.
We can conclude that the correct answer is:
C) Genotype
Indicate the location and function of the plasma membrane, as well as an analogy of it.
Plasma membrane it's located in the exterior of all cells.
The plasma membrane has several functions: first, it's the barrier between the interior of the cell and the rest of the environment; secondly, it protects the cell and gives it support; it also regulates what substances pass to the interior of the cell.
If the cell was a ballon, the plasma membrane would be the latex and all the air inside would be the cytoplasm.
Which of the following has the highest average salinity?
w. Mediterranean Sea
x. Atlantic Ocean
y. Arctic Ocean
Z. Gulf of Mexico
Salinity is the measure of how much salt has been dissolved in a body of water. It significantly affects conductivity and has an impact on a variety of chemical properties of natural waters, as well as the biological processes that occur there.
Explain about the salinity?Lake describes the Dead Sea. The Salt Sea is another name for it. With a salinity of 33.7%, the Dead Sea is the saltiest body of water on earth.
Either grams of salt per kilogram of water or parts per thousand are used to express salinity. For instance, your salinity is 1g/kg, or 1 ppt (ppt, or ), if you have 1 gram of salt and 1,000 grams of water. Salt content in freshwater is typically less than 0.5 ppt.
The Atlantic Ocean is the saltiest of the five ocean basins. Near the equator and at both poles, salinity generally decreases noticeably, though for various reasons. The tropics, which are close to the equator, consistently get the most rain.
The answer is Atlantic ocean
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Which of the following is not a means of locomotion in protists?stigmaflagellaciliapseudopod
Between the options the only one that is not a mean of locomotion in protists is the stigma, that is a plant structure and not a locomotion strategy . All the others are locomotion strategy for protists.
What happens to this enzyme when the pH rises above 11?
graph with pH on the X axis and rate of reaction on the Y-axis. The
curve begins as pH 3, peaks at pH 7, and ends at pH 11.
A The enzyme no longer functions.
B The enzyme function increases.
C The protein structure remains stable.
D The protein continues to function as normal.
Answer:
the enzyme get denatured since the optimum temperature has been exceeded therefore enzyme function slows
True or FalseNatural selection and mutation have proven to have been able to produce a new kind of organism.
The statement is false.
New kinds of organisms are impossible to make because we don’t have the necessary information, (programming) or material to be able to construct kinds of organisms.
Which of the following would result in an increase in plant growth?A. Decreased amount of other plant species, decreased amount of sunlight.B. Increase amount of other plant species, decreased amount of water.C. Decreased amount of herbivores, increased amount of sunlight.D. Increased amount of herbivores, increased amount of water.
All plants need the right temperature, light, water, air, and food to have a proper metabolism and to grow. The height of the plant is directly related to the number of nutrients in the soil and the light for its photosynthetic processes. On the other hand, the lower the number of herbivores, the less likely it is that the branches will be cut and the height of the plant will be reduced.
We can conclude that the correct answer is:
Answer:C. Decreased amount of herbivores, increased amount of sunlight.
4. Identify What forces
act on the dead organisms in
sediment, transforming these
materials into oil and gas?
cocos
Natural gas may also be produced from organic material at high enough pressure. The two basic factors that convert biological matter into fossil fuels are heat and pressure.
What transforms extinct animals into crude oil and natural gas?Algae and plants inhabited shallow oceans millions of years ago. The organic material was buried when it perished and sank to the bottom, where it mingled with other materials. The remnants of these animals were converted into fossil fuels over millions of years under extreme pressure and heat.
Layers of clay and sand have been covering dead creatures that were buried in the water millions of years ago. These decomposing organisms became petroleum and natural gas as a result of the lack of air, the high temperature, and the high pressure.
Only carbon and hydrogen are necessary for the conversion of organic matter (OM) into petroleum.
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DNA is a long molecule that carries genetic information. it is made up of small units called nucleotides. A nucleotide has a
DNA is a long molecule that carries genetic information . it is made up of small units called nucleotides . A nucleotide has a phosphate group a 5 carbon sugar called bases and one of nitrogen containing region. The purines include adenine and Thymine . The pyrimidines include cytosine and guanine.
DNA is composed of a series of molecules called nucleotides. each nucleotide is itself made up of three primary components: a nitrogen-containing region known as a nitrogenous base, a carbon-based sugar molecule called deoxyribose, and a phosphorus-containing region known as a phosphate group attached to the sugar. The nitrogen bases are adenine , thymine, guanine, and cytosine .
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Mr. Cantrell's science class is conducting an investigation to observe the differences between plant and animal cell organelles. The students will observe an onion cell under one microscope, and an animal cell under another microscope. What should students observe as being similar in the onion cell slide and the animal cell slide?
A. Both cell types have a nucleus.
B. Both cell types have a rigid cell wall.
C. Both cell types have large vacuoles.
The element chlorine belongs to which of the following groups?
*
2 points
alkali metals
halogens
noble gases
alkaline earth metals
Answer:
hallogens
Explanation:
b/c alkali and alkaline eearth metals both are group 1 and 2 hallogens group 7 and noble gases group 8 .
Which do you think has more influence on a person's weight: genetics, upbringing, or the environment?
Genetics may play a great role, but upbringing could be more important since the eating, exercising and food selection habits could be acquired during this period. Aditionally, the often high price of healthy food and lack of knowledge about how to follow a balanced diet are some socioeconomic asociated factors, related to the upbringing, that must not be ignored.
Answer:
environment
Explanation:
example public
