Question

Is crossing over and recombination the same thing?

Answer 1

Crossing over:

1. It refers to the exchange of genetic material between non-sister chromatids of homologous chromosomes.
2. It occurs at the pachytene stage of prophase 1 in meiosis 1.
3. It is the event that leads to recombination.

Recombination:

1. It is defined as the production of different combinations of alleles in the offspring.
2. It is caused by the exchange of DNA segments during crossing over.
3. It leads to genetic variation.

Correlation between crossing over and recombination:

1. Recombination of genes in the gametes is a result of crossing over, leading to variations among the offspring.
2. Both of these events occur in prophase 1 of meiosis 1 in eukaryotes.

Thus, crossing over and recombination are not the same, but are correlated processes.