What is the difference between the endoplasm and the ectoplasm?

The number of living organisms in a particular area is

Ascientist separates a population of mice into two groups. what would most likely increase the rate of speciation in this population. a. teach the two groups different tricks b. allow the two groups to breed with each other c. put the two groups in different environment d. have the two groups live in identical ecosystems

This is a situation in which genes are attached to an organism's sex chromosomes; the sex of an organism influences the expression of a gene.