What is the phenotype of brown eyes of a fruit fly

Structures in cells that carry out specific functions.

Which experiment would most likely contain experimental bias

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