Why is it necessary for meiosis to produce cells with fewer chromosomes? A. If it did not, the chromosome number would double in each
generation.
B. It saves energy for the organism to produce fewer chromosomes.
C. Organisms reproduce sexually by joining two tetrads together.
D. Asexual reproduction requires fewer chromosomes than sexual
reproduction:

a

explanation:

this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.

the correct answer is sex-linked recessive.

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in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation: