Multiple choice

An allele is defined as

  1. another word used for a gene

  2. a homozygous genotype

  3. a heterozygous genotype

  4. one among the many possible forms of a particular gene

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D Correct answer
Explanation

An allele is one of two or more alternate forms of a gene. If an individual is homozygous (YY or GG) for a trait, it has inherited the same allele from both parents. If it is heterozygous (YG), it has inherited different alleles for the trait.