Which of the following is a characteristic of a dominant allele?

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Question: Which of the following is a characteristic of a dominant allele?

Options:

Correct Answer: It is always expressed in the phenotype

Solution:

A dominant allele is expressed in the phenotype even when only one copy is present, masking the effect of a recessive allele.

Which of the following is a characteristic of a dominant allele?

Which of the following is a characteristic of a dominant allele?

Step 1: Understand what an allele is. An allele is a version of a gene that can determine a specific trait.
Step 2: Learn about dominant alleles. A dominant allele is a type of allele that can express its trait even if there is only one copy of it.
Step 3: Know what phenotype means. The phenotype is the observable physical or biochemical characteristics of an organism.
Step 4: Recognize the relationship between dominant and recessive alleles. A dominant allele can mask the effect of a recessive allele, which only shows its trait if two copies are present.
Step 5: Conclude that a characteristic of a dominant allele is that it is expressed in the phenotype even when only one copy is present.

No concepts available.