Of the different sources of genetic variability, which one causes the variation in the combinations of homologs from paternal and maternal linage found within a haploid cell? (A) independent assortment (B) crossing over (C) random fertilization (D) mutation

Question

Monique Hodges

Biology

31 May, 08:25

Of the different sources of genetic variability, which one causes the variation in the combinations of homologs from paternal and maternal linage found within a haploid cell? (A) independent assortment (B) crossing over (C) random fertilization (D) mutation

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Answers (1)

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Kimora Fry · Answer 1

Crossing over.

Explanation:

Crossing over may be defined as the phenomena of exchange of the genetic material between the non - sister chromatids of the homologous chromosomes. The crossing over occurs at the pachytene stage.

The crossing over may provide a source of genetic variation as it can create variation in the homologs of paternal and maternal lineage, present within a haploid cell. This crossing over occurs during the process of synapsis.