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38)All BUT ONE statement describes an advantage of meiosis.
A)
Variation is aided by crossing-over which occurs during meiosis.
B)
Meiosis ensures daughter cells receive one of each kind of gene and half the chromosome number.
C)
Independent assortment provides a huge number of possible genetic combinations in daughter cells.
D)
Meiosis occurs often because it allows growth and repair of body tissues in multicellular organisms.

Sagot :

Answer:

The correct answer would be A)  Variation is aided by crossing-over which occurs during meiosis.

Meiosis increases the genetic variation of the population which increases the survival rates of the population in the changing environment.

Meiosis helps in achieving genetic variation in two ways:

  • Crossing over during which non-sister chromatids of homologous chromosomes exchange their genetic material. It occurs in the pachytene stage of prophase I during the process of synapsis.
  • In addition, the zygote is formed by the fusion of two gametes which also leads to the production of a unique combination of genes in an organism.
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