in meiosis, prophase 1( the longest stage ) there is a particular stage called PACHYTENE where there is crossing of the chromatids ( the arms of the chromosome) belonging to one paternal and one...
Only the genetic traits a person wants passed along will be passed to the next generation, hence the selective breeding of purebred dogs. Unfortunately, there is a higher probability in gene...
For one, without genetic variation, a species is more likely to face significant danger from disease. In humans there are some diseases that affect a few races more than others, but because of...