Why can a recessive trait appear in the second generation even if it is not seen in the first generation?
Answer and explanation
Correct answer: Because it remains hidden in the first generation
A recessive allele is not destroyed when a dominant allele is present. In the F1 generation of a typical cross, plants may be heterozygous, such as Tt, so the dominant allele determines the visible trait while the recessive allele remains hidden. During gamete formation and recombination, two recessive alleles can meet in F2, producing tt and the recessive phenotype. Option B is correct.
Frequently asked questions
What is the correct answer to this question?
Because it remains hidden in the first generation
Why is this the correct answer?
A recessive allele is not destroyed when a dominant allele is present. In the F1 generation of a typical cross, plants may be heterozygous, such as Tt, so the dominant allele determines the visible trait while the recessive allele remains hidden. During gamete formation and recombination, two recessive alleles can meet in F2, producing tt and the recessive phenotype. Option B is correct.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Our Environment. Topic: Ecosystem.
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