Question

What significance is crossing over for evolution of a species?

Answer 1

Crossing over is a process that happens between homologous chromosomes in order to increase genetic diversity. During crossing over, part of one chromosome is exchanged with another.

Answer 2

Crossing over produces genetic variations in daughter cells, consequently leading to genetically dissimilar offspring.

Step-by-step explanation:

Crossing Over:

• A process that occurs during the Prophase 1 of meiosis 1, a type of cell division that takes place in germ cells (reproductive cells) to produce gametes for reproduction.
• Crossing over, by definition, is the exchange of chromosomal segments between non-sister chromatids of chromosomes.This occurs through a process called homologous recombination.
• Crossing over produces a variety of gametes with characteristics different from the parents.
• In terms of evolution, this process introduces genetic variations that can help the organism better adapt to its environment.