Question

How does crossing over add to the genetic diversity of sexually reproducing organisms?
A. It involves segments of two homologous chromosomes trading places.
B. It involves random segregation of the homologous chromosomes to each daughter cell. C. It involves fertilization of an ovum by any one out of millions of sperms.

Answer 1

Looks like this question is asking us for a definition of "crossing over."

CROSSING OVER happens during Prophase 1, of Meiosis.

It's where the chromosomes from your mom,
and the chromosomes from your dad,
wrap around each other.

And when they do this,
they TRADE bits and pieces of themselves, with one another.

Answer 2

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Answer 3

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Answer 4

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