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marta [7]
3 years ago
13

This allele is only expressed when two copies are present. *

Biology
1 answer:
geniusboy [140]3 years ago
7 0

Answer:

recessive

Explanation:

allele that is not expressed unless two copies are present in an organism's genotype

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3. What happens to organisms that have adaptations that no longer work for their<br> environment?
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Which type(s) of cell division (mitosis, meiosis l, meiosis Il) reduce(s) the chromosome number by half? Which type(s) of cell d
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Answer:

Which type(s) of cell division reduce(s) the chromosome number by half?

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Explanation:

Meiosis is a type of cell division which occurs in the germ or reproductive cells to produce gametes. It is completed in the two stages, meiosis I and meiosis II.  The cells which are going to divide by meiosis are diploid having two sets of chromosomes. Meiosis I is the first stage of the meiosis. At the end of meiosis I two daughter cells are formed having only 1 set of chromosomes and chromosome numbers are reduced to half. Thus, meiosis I is a reductional division.  

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