Why does the DNA need to be extracted from a cell before it can be analyzed?

When organisms are classified ,they are given a two part name

The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.

Cattle with brown fur and cattle with white fur will produce a reddish roan calf . when examined closely, the calf show about an even number of brown hairs and white hairs that give a reddish appearance when viewed from far away. the fact that both the brown fur allele and the white fur allele are expressed equally in the offspring is an example of