QQuestionBiology
QuestionBiology
Use the words 'homozygous', 'heterozygous', 'dominant', and 'recessive' (where suitable) to describe the following allele combinations: Aa, AA, aa.
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Step 1:I'll solve this problem step by step, using the specified formatting guidelines:
Step 2:: Define the Allele Combinations
- $$aa$$: Homozygous recessive
Let's analyze each possible genotype: - Both alleles are dominant - Will always express the dominant trait - One dominant and one recessive allele - Will express the dominant trait - Carries a recessive allele that can be passed to offspring - Both alleles are recessive - Will only express the recessive trait
Step 3:: Explanation of Terms
- Homozygous: Having two identical alleles (either both dominant or both recessive) - Heterozygous: Having two different alleles (one dominant, one recessive) - Dominant: The allele that is expressed when present - Recessive: The allele that is only expressed when no dominant allele is present
Final Answer
- AA: Homozygous dominant - Aa: Heterozygous - aa: Homozygous recessive
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