You are studying a population of jellyfish. It has a population size of about 10

Question

You are studying a population of jellyfish. It has a population size of about 10,000 individuals. As long as there are multiple alleles of a gene in this population, why will the frequencies of the alleles always change over time?
A. Because allele frequencies fluctuate before the alleles eventually become fixed. B. Because natural selection changed all allele frequencies in populations over time. C. Because diseases will eliminate some of the alleles, generating fluctuations in their frequencies D. Because genetic drift causes random fluctuations of allele frequencies in populations. You are studying a population of jellyfish. It has a population size of about 10,000 individuals. As long as there are multiple alleles of a gene in this population, why will the frequencies of the alleles always change over time?
A. Because allele frequencies fluctuate before the alleles eventually become fixed. B. Because natural selection changed all allele frequencies in populations over time. C. Because diseases will eliminate some of the alleles, generating fluctuations in their frequencies D. Because genetic drift causes random fluctuations of allele frequencies in populations.
A. Because allele frequencies fluctuate before the alleles eventually become fixed. B. Because natural selection changed all allele frequencies in populations over time. C. Because diseases will eliminate some of the alleles, generating fluctuations in their frequencies D. Because genetic drift causes random fluctuations of allele frequencies in populations. A. Because allele frequencies fluctuate before the alleles eventually become fixed. B. Because natural selection changed all allele frequencies in populations over time. C. Because diseases will eliminate some of the alleles, generating fluctuations in their frequencies D. Because genetic drift causes random fluctuations of allele frequencies in populations.

Explanation / Answer

Answer D. Because genetic drift causes random fluctuations of allele frequencies in populations.

Explanation : Allele frequencies in a population may change due to four fundamental forces of evolution: Natural Selection, Genetic Drift, Mutations and Gene Flow. Natural selection usually predominates in large populations whereas genetic drift does so in small ones.

Related Questions

Navigate

• Browse (All)
• Browse Y
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.