Which of the following represents a homozygous genotype?

Which of the following represents a homozygous genotype?

Correct Answer: AA ya aa

Step 1: Understand what a genotype is. A genotype is the genetic makeup of an organism, represented by letters.
Step 2: Learn about alleles. Alleles are different forms of a gene. For example, 'A' and 'a' are two different alleles.
Step 3: Know the difference between homozygous and heterozygous. Homozygous means having two identical alleles (like AA or aa), while heterozygous means having two different alleles (like Aa).
Step 4: Identify examples of homozygous genotypes. Look for pairs of the same letter, either both uppercase (AA) or both lowercase (aa).
Step 5: Conclude that a homozygous genotype is represented by two identical letters.

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