Introduction to Genetics Answers

Gregor Mendel’s research formed the basis of the field of

Which statement best describes an understanding of genetics that would be missing without the work of Mendel?

Scientists often use fruit flies as a method to test hypotheses about human genes. Why are fruit flies advantageous in the study of human inheritance?

What is a gene?

Some people have freckles, and some people do not have freckles. If a child has freckles, at least one parent has freckles. However, the child may have a sibling that does not have freckles. Which statement best describes the presence of freckles?

During an experiment, a scientist crosses a pea plant that has purple flowers with a pea plant that has white flowers. The plants that result from this cross in the F1 generation have both purple and white flowers. What can the scientist conclude?

The flowchart below shows the three generations of a cross between a pea plant that has yellow pods and a pea plant that has green pods. Green pods are the dominant trait. The flowchart is missing the labels that describe the traits.In which squares should the phrase “Green pods” appear?

Which has the most control of traits and inheritance?

Why did Gregor Mendel use peas in his experiments?

Which statement describes Mendel’s hypotheses regarding gametes?