Why does Mitotic Crossing Over occur in X-linked genes? wrt 'y' gene and 'sn' gene in Drosophila melanogaster.

efoster900 | Student

The crossing over happens because the two alleles that make up the parent chromosomes are so close together, occasionally a gene on one allele can get "stuck" to the other allele, and the genes can switch places. Kinda like squishing two ropes of play-doh together, then trying to pull them apart-sometimes you have some transference of play-doh.

Access hundreds of thousands of answers with a free trial.

Start Free Trial
Ask a Question