Even if only the tall trait appears in the first generation, why can the dwarf trait not be considered destroyed?
Answer and explanation
Correct answer: Because it can remain present in a hidden hereditary form
In a Mendelian cross, a dominant allele can mask the expression of a recessive allele in the heterozygous first-generation offspring. The recessive allele is not destroyed; it remains part of the genotype and can pass into gametes. When two offspring contribute that recessive allele to a later generation, the dwarf phenotype can reappear. Therefore option A is correct. The other choices deny inheritance or describe biologically impossible events.
Frequently asked questions
What is the correct answer to this question?
Because it can remain present in a hidden hereditary form
Why is this the correct answer?
In a Mendelian cross, a dominant allele can mask the expression of a recessive allele in the heterozygous first-generation offspring. The recessive allele is not destroyed; it remains part of the genotype and can pass into gametes. When two offspring contribute that recessive allele to a later generation, the dwarf phenotype can reappear. Therefore option A is correct. The other choices deny inheritance or describe biologically impossible events.
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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