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GarryVolchara [31]
3 years ago
14

Why do humans show variation?

Biology
1 answer:
Mars2501 [29]3 years ago
8 0

Answer:

gugkugcoytci6r

Explanation:

Causes of Variation:

Causes of differences between individuals include independent assortment, the exchange of genes (crossing over and recombination) during reproduction (through meiosis) and various mutational events. There are at least three reasons why genetic variation exists between populations.

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If two organisms show a developmental homology you would also definently expect them to?
san4es73 [151]

If two organisms show a developmental homology you would also definitely expect them to share genetic homologies.

Homology is the similarity between two organisms. This similarity can be of body structures, physiology, etc. This homology is generally due to shared ancestral history between two organisms. For example, the wings of a bird and bats are homologous structures, this is because they have a common anatomy.

Genetic homology refers to the arrival from the same gene from a common ancestor. The same gene is shared between two organisms who may not be related in any other matter. Genetic homology can even be depicted by the sequences of a protein.

To know more about homology, here

brainly.com/question/11344125

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7 0
1 year ago
Carbon-12 and Carbon-14 are isotopes; it means that
jok3333 [9.3K]
A :-) Isotopes are forms of the same element with equal numbers of protons but different numbers of neutrons. For example, both carbon-12 and carbon-14 have 6 protons. But carbon-12 has 6 neutrons while carbon-14 has 8 neutrons. By definition, carbon-12, carbon-13 and carbon-14 are all isotopes of the carbon.
8 0
3 years ago
The ability of one person to produce over a million different antibody molecules does not require over a million different genes
Tema [17]

Answer:

DNA rearrangment.

Explanation:

Genetics can be defined as the scientific study of hereditary in living organisms such as humans, animals and plants.

The human somatic cell is made up of 46 chromosomes which are sub-divided into 22 pairs of autosomes and a pair of sex chromosomes (X and Y). An autosome is one of the numbered chromosome that is typically not a sex chromosome.

On the other hand, sex chromosomes (X and Y) are responsible for determining the gender or sex of living organisms such as humans.

Deoxyribonucleic acid (DNA) is an organic complex-molecular structure found in all living organisms. It comprises of genes and is essentially the foundation block of all living organisms such as humans, animals and plants.

DNA rearrangment can be defined as a process which typically involves re-writing the informations contained within a Deoxyribonucleic Acid (DNA) into a Ribonucleic Acid (RNA) by enzyme RNA polymerase.

Hence, the ability of an individual to produce over a million different antibody molecules doesn't require the use of over a million different genes; rather, this wide range of antibody production is due to deoxyribonucleic acid (DNA) rearrangment.

6 0
3 years ago
A type of standing-water habitat in which the soil is acidic and decay is slow is called a _____.
Roman55 [17]

Answer:

Bog

Explanation:

A type of standing-water habitat in which the soil is acidic and decay is slow is called a <u>bog</u>.

4 0
3 years ago
To test how fertilizer affects aquatic animals, a student prepared four identical containers with water fleas. The student then
dimulka [17.4K]

Answer:

The answer is B

The fleas in the container with only distilled water

Explanation:

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5 0
3 years ago
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