In Mendelian genetics, what does the term 'homozygous' refer to?

Practice Questions

Q1
In Mendelian genetics, what does the term 'homozygous' refer to?
  1. Having two different alleles for a trait
  2. Having two identical alleles for a trait
  3. The physical expression of a trait
  4. The genetic makeup of an organism

Questions & Step-by-Step Solutions

In Mendelian genetics, what does the term 'homozygous' refer to?
  • Step 1: Understand that genes come in different versions called alleles.
  • Step 2: Know that alleles can be dominant or recessive.
  • Step 3: Realize that 'homozygous' means having two of the same alleles.
  • Step 4: Identify that these alleles can be both dominant (e.g., AA) or both recessive (e.g., aa).
  • Step 5: Conclude that being homozygous means you have two identical alleles for a specific trait.
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