How does crossing over affect the genetic diversity of a species

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

Advances in technology have enabled scientists and researchers to better study the evolutionary relationships between species

Aperson is outside exercising. body temperature begins to rise, and the person starts to sweat. their body temperature then returns to normal, and the body stops sweating. a positive b negative c allosteric d homeopathic