What does it mean that the tall trait is dominant in a pea plant?
Answer and explanation
Correct answer: It can appear even when one dwarf form is present
A dominant allele is expressed in the phenotype even when it is paired with a contrasting recessive allele. In pea plants, a plant with genotype Tt is tall because the tall allele masks the dwarf allele; the dwarf trait appears phenotypically only in tt plants. Therefore, option A is correct. Dominance does not mean that a trait is found only in leaves or that it makes food, so C and D are unrelated, while B is opposite to the observation.
Frequently asked questions
What is the correct answer to this question?
It can appear even when one dwarf form is present
Why is this the correct answer?
A dominant allele is expressed in the phenotype even when it is paired with a contrasting recessive allele. In pea plants, a plant with genotype Tt is tall because the tall allele masks the dwarf allele; the dwarf trait appears phenotypically only in tt plants. Therefore, option A is correct. Dominance does not mean that a trait is found only in leaves or that it makes food, so C and D are unrelated, while B is opposite to the observation.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Heredity and Evolution.
