When can a recessive trait appear?
Answer and explanation
Correct answer: When both recessive forms are present
A recessive trait is expressed when an individual has two recessive alleles, commonly represented by aa. If a dominant allele is present, it usually masks the recessive allele in the phenotype, although the recessive allele can still be inherited. Thus, option A is correct. Option B describes the situation in which the dominant trait is expressed, while C and D have no valid genetic connection with recessive expression.
Frequently asked questions
What is the correct answer to this question?
When both recessive forms are present
Why is this the correct answer?
A recessive trait is expressed when an individual has two recessive alleles, commonly represented by aa. If a dominant allele is present, it usually masks the recessive allele in the phenotype, although the recessive allele can still be inherited. Thus, option A is correct. Option B describes the situation in which the dominant trait is expressed, while C and D have no valid genetic connection with recessive expression.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Heredity and Evolution.
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