What explains how the parents in a family both have the same eye color, but some of their children have a different eye color? Assume for this example that eye color is determined by a single gene.
A. One parent is homozygous dominant, and the other heterozygous for a gene that controls eye color allowing some of the children to express a different trait.
B. The parents are both homozygous dominant for a gene that controls eye color allowing some of the children to get two recessive alleles.
C.One parent is homozygous dominant, and the other homozygous recessive for a gene that controls eye color allowing some of the children to express a different trait.
D. The parents are both heterozygous for a gene that controls eye color allowing some of the children to get two recessive alleles.
The correct option is D. The parents are both heter0zyg0us for a gene that controls eye color allowing some of the children to get two recessive alleles.
What is complete dominance?When the dominant allele completely masks the recessive allele, we talk about complete dominance.
This is the case of individuals that are heter0zyg0us for a particular gene and express the dominant trait. The dominant allele is hiding the expression of the recessive allele.
In the exposed example, let us assume that the alleles that code for eye color are the followings,
E is the dominant allele and codes for the dominant colore is the recessive allele and codes for the recessive colorIf at least one parent is h0m0zyg0us dominant for the trait, EE, the whole progeny will express the dominant trait because all of them will carry at least one dominant allele.
If both parents are heter0zyg0us Ee, some children will express the dominant trait and some other the recessive trait. This is because some of the children receive at least one dominant allele and some others only receive recessive alleles.
Cross:
Parentals) Ee x Ee
Gametes) E e E e
Punnett square) E e
E EE Ee
e Ee ee
F1) Genotype
1/4 = 25% of the progeny is expected to be h0m0zyg0us dominant EE
1/2 = 50% of the progeny is expected to be heter0zyg0us Ee
1/4 = 25% of the progeny is expected to be h0m0zyg0us recessive ee
Phenotype
3/4 = 25% of the progeny is expected to have the dominant eye color
1/4 = 25% of the progeny is expected to have the recessive eye color
The correct option is D. The parents are both heterozygous for a gene that controls eye color allowing some of the children to get two recessive alleles.
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write out five examples each of food chain in terrestrial and aquatic habitat
Answer:
1.) Sun, Sea water plant, bottom feeder fish, shark,
Explanation:
I have done those questions before and I just gave a basic answer but Sun is always at the top because it gives energy for plants which is normally second like for example: Sun, Grass, Grass hopper, Snake, Bird, Spider (that eats birds or something)
A population of squirrels lived together in a forest. An event occurred that caused the population to diverge into two different species over a long period of time. Which of the following is most likely the event that occurred?
Answer: A natural disaster occurred that separated squirrels.
Hence, this would be the answer.
Answer:
B. A natural disaster that separated squirrels
Explanation:
I can confirm this is correct because I just did the test.
Explain why the pyramid of ocean life directly affects human health.
Answer: humans eat some the ocean life, and other fish don't have any food because of it.
Explanation:
Which factor most accurately describes the statement ""survival of the fittest"" in relation to natural selection?.
Answer:
Predators
Explanation:
With natural selection, survival of the fittest can mean many things however one of the factors of which accurately describes the statement would be predators.
please answer my question correctly
#1
Sea breeze part
When the land gets warmer in day time the warm air goes up To fill the free space created underneath the middle atmosphere cold air breezes from ocean surface towards land to fill up the free space .This is the reason why humidity remains at peak during day time on beach sides#2
Land breeze part
In night time the opposite of day time appears ,the ocean surface gets warmer.The warm air rises upTo fill up the free space cool air from land surface goes there .Humidity remains less so we feel chill during night timeAnswer:
#1
Sea breeze part
When the land gets warmer in day time the warm air goes up
To fill the free space created underneath the middle atmosphere cold air breezes from ocean surface towards land to fill up the free space .
This is the reason why humidity remains at peak during day time on beach sides
#2
Land breeze part
In night time the opposite of day time appears ,the ocean surface gets warmer.
The warm air rises up
To fill up the free space cool air from land surface goes there .
Humidity remains less so we feel chill during night time
Biology question! Please help!
In this question we will transcribe DNA to RNA
What is DNA and RNA?It consists of a pentose, a phosphate and has
adenineguaninecytosine and uracil as nitrogenous bases.RNA, unlike DNA, is composed of only one strand and it is produced in the cell nucleus from one of the strands of a DNA molecule. Once ready, the RNA goes to the cell cytoplasm, where it will perform its main function, which is to control protein synthesis.
Table 1
CAC-GUG-GAC-UGA-GGA-CUU-CUC
Table 2CAC-GUG-GAC-UGA-GGA-CAU-CUC
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Approximately what percentage of human energy requirements is currently produced with fossil fuels?
Answer:
80%
Explanation:
a study in 2019 shows that 80% of our human energy is produced with fossil fuels
4.2
A plant was placed in water containing black dye. After 24 hours the
plant was removed and sections were taken from the root and the
stem.
Which diagram shows the results?
(2)
A
**
root
stem
root
stem
C
D
root
stem
root
stem
Answer:
d
Explanation:
because maths innit fam
A plant was placed in water containing black dye. After 24 hours the
plant was removed and sections were taken from the root and the
stem. In the root, cambium part will get stained and in the stem, cortex will be stained from dye so the correct option is D.
What is cambium and cortex in plant root and stem?Cambium is a layer of continuous dividing cells between xylem and phloem tissues which is responsible for the secondary growth of stems and roots. A cortex is an outer layer of a root or stem in a plant, located below the epidermis but outside of the vascular bundles.
The conduction (uptake) of water in a plant stem takes place through the xylem.
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A new predator is introduced to an aquatic ecosystem. In a population of fish that live there, very small fish are more easily able to hide from the predators, and very large fish cannot be easily eaten by predators. What type of natural selection is acting on the population, and what will be the expected result?
A.Stabilizing selection: Since both extremes are selected against, the fish population will remain about the same.
B.Disruptive selection: Over time the fish population will change. Medium-sized fish will become rare, small and large fish will be common.
C.Stabilizing selection: Over time the fish population will change. Medium-sized fish will become rare, small and large fish will be common.
D.Disruptive selection: Since both extremes are selected against, the fish population will remain about the same.
Disruptive selection: Over time the fish population will change. Medium-sized fish will become rare, and small and large fish will be common is a type of natural selection that is acting on the given population. So, it's B.
What do you mean by Ecosystem?An ecosystem may be defined as any place or area where the members of different species or communities live together and interact with one another for the purpose of food, shelter, and space.
As predators are only able to attack the moderate-sized fishes, so the population of moderate-sized fishes may decline in the aquatic ecosystem, while extremely short and large fishes are able to maintain their population at the same pace.
Therefore, the correct option for this question is B.
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please answer my question correctly
#1
Monsoon is a derived word of Arabic language
It simply breaks down into "wasama" and "mawsim"
Wasama means to mark and mawsim is rainy season#2
Monsoon mostly brings happiness as crops start to grow up .Many farmers from different regions depends upon monsoon for croppingPros
Monsoon helps in croppingIt increases melancholyness among the animals and humansCons:-
If Monsoon stays long at one place it brings heavy flood to withdraw some lives
The heart has 4 valves. Explain how one of them works
Explanation:
The heart has four valves - one for each chamber of the heart. The valves keep blood moving through the heart in the right direction. The mitral valve and tricuspid valve are located between the atria (upper heart chambers) and the ventricles (lower heart chambers)
Distinguish how an animal welfare activist would most likely feel about the animals’ housing and training in the following scenario.
A traveling circus uses a number of animals in its act, including a tiger and a small herd of elephants. When traveling, the tiger gets its own car and attendants who feed it regularly. The elephants are dispersed among three cars and each has a number of attendants who feed and clean up the elephants’ waste. To train the animals, the circus hires animal trainers who use whips to teach the animals how to behave in the ring.
Answer:
using whips on animals is not a desirable activity, as well as circus' being notorious for the mistreatment of animals, I think anybody who had these animals welfare in mind would disapprove of this scenario
Explanation: my Best guess with the contect given
Consider the following experiment. A healthy plant is placed in a sealed container overnight, when the plant is in darkness. The concentration of oxygen in the trapped air is measured at the start of the night and again in the morning.
Predict whether you expect there to be more or less oxygen in the container in the morning, or the same? Explain why.
I expect to see less oxygen in the container in the morning because plants consume oxygen at night.
What is cellular respiration?Cellular respiration is the process by which organisms consume oxygen and generate carbon dioxide.
During the night, a plant can consume oxygen and release carbon dioxide in this process (respiration).
In conclusion, I expect to see less oxygen in the container in the morning because plants consume oxygen at night.
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1 Minute, 15
1
Ø
III
The circle and squares that are shaded in
mean that those individuals
?
are females
are carriers for the trait or disorder
are not affected with the trait or disorder
are affected with the trait or disorder
Explain/identify each phase of the cell cycle. (interphase + mitosis + cytokinesis).
Answer:
Interphase is when cell grows, replacing it chromosomes while preparing for cell division.
Mitosis - copies its chromosomes and then segregates them, generating two identical nuclei.
Cytokinesis - the cytoplasm splits in half to make two new cells.
Because the tuberculosis bacteria generally stay dormant after they invade the body, only ___________ percent of people infected with TB will ever develop the active disease. (9.2.5
Only 5-10 percent of people infected with Tuberculosis will ever develop the active disease.
What is Tuberculosis?This is an airborne and contagious disease which affects the lungs and can be treated using antibiotics.
Most times, it is dormant and only about 5 to 10 percent of people will ever develop the active disease.
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A client has had a kidney transplant performed for end-stage kidney disease. What type of immune response that T-cell lymphocytes perform is related to this type of surgery
The type of immune response that T-cell lymphocytes have related to this type of surgery is cell-mediated response.
What is the cell-mediated response?The cell-mediated response is a type of cellular response where cells of the immune system work to maintain a healthy state.
This type of response (cell-mediated response) is associated with the activation of inmmune T cells.
In conclusion, the type of immune response that T-cell lymphocytes have related to this type of surgery is cell-mediated response.
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Explain how Direct Harvesting has contributed towards the loss of
biodiversity.
What is the chemical equation for aerobic respiration
Answer:
C6H12O6 + 6O2 yields 6CO2 + 6H2O + energy
In order for high level expression of the E. coli lac operon to occur, a complex of catabolite activator protein and __________ must be bound to the DNA near the promoter.
In order for high level expression of the E. coli lac operon to occur a complex of catabolite activator protein and __CAMP__must be bound to the DNA.
What is E. coli lac operon ?The E. coli lac operon is consisted of genes which are involved in the metabolism of lactose in the presence of lactose and absence of glucose. the operon is turned off and on by regulators based on the different levels of glucose and lactose.
Hence we can conclude that In order for high level expression of the E. coli lac operon to occur a complex of catabolite activator protein and __CAMP__must be bound to the DNA.
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In 2001, the Human Genome Project reported that humans have about 30,000 genes. By 2018, researchers had revised that number to
In 2001, the Human Genome Project reported that humans have about 30,000 genes. By 2018, researchers had revised that number to 20,700. This is further explained below.
What is Genome?Generally, Genome can be defined as a gamete or microorganism's haploid pair of chromosomes or each cell of a multicellular organism
In conclusion, researchers had revised that number to around 20,000 to 25,000 in later years
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Explain how cancer cells grow.
Answer:
Gene mutations in cancer cells interfere with the normal activity within a cell.This can cause it to grow out of control and/or not die when it should. Cancerous cells can continue to grow because they behave differently than normal cells do. Cancer cells differ from regular cells in many ways,one of their more apparent traits is that they divide quickly with no control over them.The amino acid glutamine is one of the many key factors to helping the growth of cancer cells. Like all cells, cancer cells need nutrients to grow,sugar is one important fuel for it's development, but is far from the only factor.
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I am offering 45 points, because I really need a good, complete answer. As a result of your Zombie Apocalypse, the grass at a local park will no longer be mowed. What type of succession is this (primary or secondary)? Describe the stages of succession that will occur in the next 100 years.
Answer: the next 100 years won't matter as long as you have a good soil because it contains a good amount of nutrients for farming other than that I don't know what to say I can't really understand your question
Explanation:
when does the embryo form?
A. At the end of the third trimester
B. A few days after fertilization
C. In the second trimester
D. At the end of the first trimester
Which observations describe both images? Select all the correct answers. The oil mixes with water. The oil floats on the surface of the water. The oil sinks to the bottom of the water. The oil spreads to cover the water. The oil stays in one spot.
The correct answers are, the oil floats on the surface of the water and it spreads to cover the water surface.
Properties of oil
Oil is a liquid substance that can be described with the following properties;
Oil is less dense than water, which means it will float in waterOil has high viscosity, and with the help of surface tension of water it will spread in water.Thus, the correct answers are, the oil floats on the surface of the water and it spreads to cover the water surface.
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What are 2 reasons a species might evolve to become a new species?
The chickenpox virus can remain latent in host cells by integrating its DNA into the host cell genome. This virus uses the ______ cycle as its main life cycle pathway.
The chickenpox virus can remain latent in host cells by integrating its DNA into the host cell genome. This virus uses the genoma replication cycle as its main life cycle pathway.
How does the virus replication process take place?Viral replication refers to the process by which a virus reproduces within a living organism. This usually involves turning infected cells into virus factories, which make copies of the virus's genetic code and expel them to spread into the host's body.
Upon replication, viruses produce new copies of themselves within infected cells.
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are iguanas aggressive animals
Answer: Depends on there mood like a lot aninmals. Typically though, they are not aggresive and are probably hungrey.
Which substances compose the backbone of DNA? sugars and lipids phosphates and amino acids sugars and phosphates lipids and proteins