What does heterozygous mean?

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Prepare for the Anatomy and Physiology Test with multiple-choice questions and detailed explanations. Enhance your understanding of organ systems and boost your exam confidence!

Multiple Choice

What does heterozygous mean?

Explanation:
Heterozygous means you have two different alleles at the same gene locus in a diploid organism. You inherit one allele from each parent, and if those alleles differ (for example, A and a or B and b), the genotype is heterozygous. This is distinct from being homozygous, where both alleles at that locus are identical (like AA or aa). Remember, heterozygosity concerns variation at a single gene locus, not two different genes or having only one chromosome.

Heterozygous means you have two different alleles at the same gene locus in a diploid organism. You inherit one allele from each parent, and if those alleles differ (for example, A and a or B and b), the genotype is heterozygous. This is distinct from being homozygous, where both alleles at that locus are identical (like AA or aa). Remember, heterozygosity concerns variation at a single gene locus, not two different genes or having only one chromosome.

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