Which of the following conclusions are MOST likely to be supported by genetic evidence?
A. Some modern-day organisms did not exist in the past.
B. Some organisms found in the fossil record do not currently exist.
C. Environmental change affected the fitness of individuals differently based on their traits.
D. Some disease-causing traits may remain in a population because their alleles provide an advantage to heterozygotes.
1 answer
D. Some disease-causing traits may remain in a population because their alleles provide an advantage to heterozygotes.