Describe 3 types of barriers that can cause population to become reproductively isolated from each other

Transmission electron microscope are best for viewing a) microorganisms in pond water b) internal organs of a mouse c)internal structures of a cell d) surface features of a specimen

Apair of fruit flies reproduces and has 1,000 offspring. all 1,000 of the offspring have the alleles gg. what is the most likely combination of alleles for each parent

When proteins are being produced by a cell, scientist say that the genes are question 2 options: activated turned off replicated deactivated