If R = red and r = white, what would be the result of a cross between a heterozygous female (red-eyed with one recessive allele) and a recessive male?

Patricia is told by her physician that her body and brain chemistry have physically adapted to the drug and that she has become dependent on the tranquilizers prescribed for her by another doctor.

Ablastocyst is a group of cells that forms after a human egg is fertilized. the blastocyst consists of two types of cells. some of these cells will become the placenta. what do the other cells develop into?

This is one of the five kingdoms in the older biological succession. organisms in this kingdom are prokaryotic