13. Explain why a characteristic which helps an animal to live longer will generally tend to become more
common in the population as a result of evolution by natural selection.

How had the study of mitosis affected scientists knowledge of cancer

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

Which of the following graphs have the same wavelengths