During the early stages of meiosis, two chromosomes in a homologous pair may exchange segments, producing genetic variation in s

Question

3 years ago

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During the early stages of meiosis, two chromosomes in a homologous pair may exchange segments, producing genetic variation in s

ex cells. This process of exchange is called A) transcription. B) crossing over. C) nondisjunction. D) genetic shuffling.

Biology

2 answers:

irina1246 [14] · Answer 1 · 2022-08-16T13:36:29+03:00

irina1246 [14]3 years ago

7 0

B: during the early stages of meiosis, chromosomes in a homologous pair exchange segments, the process is called Crossing over.

rjkz [21] · Answer 2 · 2022-08-16T14:42:52+03:00

The correct answer is option B, that is, crossing over.

Crossing over or chromosomal crossover refers to the interchange of genetic substance between the two homologous chromosomes non-sister chromatids, which leads to the formation of recombinant chromosomes at the time of sexual reproduction.

It takes place in the pachytene stage of prophase I of meiosis at the time of a procedure known as synapsis.