How did griffin help build our understanding of genetics

How did griffin help build our understanding of genetics?

He showed that cells contain a transforming factor. They have different genes. Two brothers inherit different sets of alleles from their parents.

answer: dna

because all cells have genes

answer; the male's sperm cells have mitochondria, but because the sperm contributes dna but no cytoplasm, no mitochondria are passed to the egg at ferilization;