A diploid individual carrying two different alleles at a given gene locus is called:

• A. homozygous
• B. hemizygous
• C. heterozygous
• D. monozygous

Answer: (C)

Verified step by step guidance

1. Understand the definitions of the terms related to alleles at a gene locus:
2. Homozygous means having two identical alleles at a gene locus.
3. Heterozygous means having two different alleles at a gene locus.
4. Hemizygous refers to having only one allele of a gene in a diploid organism, often seen in sex chromosomes.
5. Monozygous is not a standard term used to describe allele combinations at a gene locus.