Darwin thought that all natural selection was negative.However,we have since learned that positive selection is a powerful force,and it
A) creates new gene variants that enhance the phenotype.
B) retains gene variants or combinations that promote successful reproduction.
C) enables people to resist infectious diseases.
D) enables us to alter our genotypes.
E) removes gene variants that are harmful.
Correct Answer:
Verified
Q24: The population of HIV variants in a
Q25: Which of these affects allele frequencies the
Q26: Which of these best represents natural selection?
A)Recessive
Q27: Control of human reproduction to achieve a
Q28: A genetic signature for positive selection is
A)
Q30: _ in the human population reduced the
Q31: A person who is a heterozygote for
Q32: Natural selection can alter gene frequencies in
Q33: In 1910,Charles Davenport opened the Eugenics Record
Q34: Mutation differs from other sources of genetic
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