A situation where you would be likely to use mtDNA is: When there is a large amount of nuclear DNA
On the teeth and bones of skeletonized human remains
On a victim who has just died
When blood is present at the scene

Why do leaves change color in the fall? green pigments break down and no longer mask the color of chlorophyll. chlorophyll breaks down and no longer masks the colors of other pigments. red- and yellow-colored pigments grow and mask green-colored chlorophyll. green-colored chlorophyll breaks down and turns red and yellow.

Vessels draining the myocardium of the heart, open primarily ,into which chamber?

Are the brightest stars low magnitude or high magnitude?