If both factors for a trait in an individual are identical, what is that condition called?
Answer and explanation
Correct answer: Homozygous
For a gene, the two alternative forms are called alleles. When the alleles at a particular locus are identical, such as TT or tt, the individual is homozygous. Homozygous describes the genetic combination, not whether the trait is dominant or recessive: TT is homozygous dominant and tt is homozygous recessive. Therefore A is correct, whereas heterozygous means two different alleles.
Frequently asked questions
What is the correct answer to this question?
Homozygous
Why is this the correct answer?
For a gene, the two alternative forms are called alleles. When the alleles at a particular locus are identical, such as TT or tt, the individual is homozygous. Homozygous describes the genetic combination, not whether the trait is dominant or recessive: TT is homozygous dominant and tt is homozygous recessive. Therefore A is correct, whereas heterozygous means two different alleles.
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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