If only the dominant trait appears in the first generation of a cross what is correct about the recessive trait?
Answer and explanation
Correct answer: It may be hidden and can appear in the next generation
The governing concept is segregation of alleles in Mendelian crosses. In the first filial generation, a dominant allele can mask a recessive allele in the phenotype, especially when the offspring are heterozygous. The recessive allele remains in the genetic material and can separate into gametes; if two suitable recessive alleles meet in the next generation, the recessive phenotype may reappear. Thus A is correct, while B, C, and D misunderstand inheritance.
Frequently asked questions
What is the correct answer to this question?
It may be hidden and can appear in the next generation
Why is this the correct answer?
The governing concept is segregation of alleles in Mendelian crosses. In the first filial generation, a dominant allele can mask a recessive allele in the phenotype, especially when the offspring are heterozygous. The recessive allele remains in the genetic material and can separate into gametes; if two suitable recessive alleles meet in the next generation, the recessive phenotype may reappear. Thus A is correct, while B, C, and D misunderstand inheritance.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: The Human Eye and the Colourful World.
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