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Genrish500 [490]
3 years ago
7

From a single fertilized ovum undergoing a series of rapid cell divisions, a human infant develops. The embryonic cells become s

pecialized for a variety of functions. Which of these statements best describes how different cell types develop?
A. Each cell type contains only the active parts of the DNA needed for that cell type.
B. Each cell has multiple copies of DNA that are affected in different ways by the environment to change the function of the cell at regular intervals.
C. Each cell has an identical copy of DNA with enzymes controlling the expression of specific genes, leading to a variety of cells.
D. Each cell type has only one chromosome containing thr DNA needed for that cell type.

Please help ill give you 5 star and brainliest.
Biology
1 answer:
weeeeeb [17]3 years ago
3 0

Answer:

Answer is C

Explanation:

Each cell has an identical copy of DNA with enzymes controlling the expression of specific genes leading to a variety of cells

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Answer:

The 2 processes that occur in meiosis to create genetic diversity are <em>crossing over and independent assortment.</em> <em>Crossing over is when exchange of DNA segments occurs between homologous chromosomes. Independent assortment is when homologous chromosomes assort independently into gametes. </em>

Explanation:

Meiosis can be described as a process of cell division through which four daughter cells are produced having half the number of chromosomes as the parent cell.

During this process, the phenomenon of crossing over and independent assortment occurs which allows for the genetic diversity which we see in organisms of a species.

During Prophase 1 of meiosis 1, homologous chromosomes exchange segment of DNA between them which leads to genetic diversity.

During Anaphase 1 of meiosis 1, homologous chromosomes move to each side of the cell and the chances of the gamete to receive any of the chromosome is random.

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Answer:

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The bottleneck effect occurs when most of the members of a population die because of any natural disaster like flood, fire, etc. This can cause a certain allele to be lost in the remaining population because of losing major populations. So here due to hurricane half of the mammal population gets eliminated which shows it is an example of the genetic drift.

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