No they can not
Glad I could help
Answer:
Differential reproduction leads to a change in allele frequencies over time. This occurs because of natural selection favoring "successful" individuals that produce more viable offspring.
The sickle-cell allele is maintained in populations exposed to malaria through balancing selection, since heterozygous individuals have protection against the disease.
Answer:
C. Carbon, nitrogen
Explanation:
Nucleic acids contain C, H, O, N, and P. Amino acids contain C, H, O, and N (no phosphorous).