How did Griffith help build our understanding of genetics? O A. He showed that only humans contain DNA.
O B. He showed that cells contain a transforming factor.
O c. He showed that traits cannot be inherited.
O D. He showed that viruses do not contain DNA.

Which of the following occurs most often in a population when genetic variation and overproduction are present? some organisms have a lower reproductive success than others. some organisms have a higher reproductive success than others. some organisms have no reproductive success. some organisms do not have genetic variation.

When you run, you begin to breathe heavier and faster. your heart beats more quickly, bringing more oxygen to your cells. which organ systems are working together here?

Which is one example of a phenotypic change that is not genetic