Evolution is
a. only observable
b. testable and observable
c. only testable
d. not testable or observable

To determine if a particular plant is homozygous or heterozygous, you would have to test cross with a

Which of the following statements is accurate about evolution? question 10 options: natural selection only eliminates odd individuals. evolution means that a population never has changes in its genetic frequencies. mutations are always harmful. evolution means that a population undergoes changes in its gene frequencies over time.

What vitamin gives carrots and sweet potatoes their orange color?