Asked by Ava
A student claims that dominant traits are always the most common traits. Is this true? Why or why not? (1 point)
No, dominant traits only show up if they are inherited; how common they are is not influenced by this.
Yes, dominant traits became more common over time as they are passed down from generation to generation;
recessive alleles continue to become less common over time.
O Yes, dominant traits are called dominant because they are the most common.
No, dominant traits in general tend to be less common in the population and continue to persist only because they are
dominant over more common recessive alleles.
O
All Answers 1
Answered by
GPT-5 mini
AI
The first option is correct.
No — dominance describes how an allele affects the phenotype in heterozygotes, not how common the allele is in a population. Allele frequency is set by selection, mutation, genetic drift, migration, etc. A dominant allele can be rare (e.g., Huntington disease) and a recessive allele can be common (e.g., some populations with high cystic fibrosis carrier rates or sickle‑cell traits maintained by heterozygote advantage).
No — dominance describes how an allele affects the phenotype in heterozygotes, not how common the allele is in a population. Allele frequency is set by selection, mutation, genetic drift, migration, etc. A dominant allele can be rare (e.g., Huntington disease) and a recessive allele can be common (e.g., some populations with high cystic fibrosis carrier rates or sickle‑cell traits maintained by heterozygote advantage).
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