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

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

Options:

  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

Correct Answer: Having two identical alleles for a trait

Solution: 

Homozygous refers to having two identical alleles for a particular trait, either dominant or recessive.

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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