Question

Write down differences between homozygous and heterozygous.

Hint:

In dominant-recessive inheritance, heterozygous individuals often express the dominant trait, while homozygous recessive individuals express the recessive trait.

Answer 1

Step 1: Understanding Homozygous and Heterozygous.
- **Homozygous**: An organism is homozygous when it has two identical alleles for a particular gene (e.g., AA or aa).
- **Heterozygous**: An organism is heterozygous when it has two different alleles for a particular gene (e.g., Aa).

Step 2: Conclusion.
- Homozygous individuals have identical alleles, while heterozygous individuals have different alleles for a gene.
- Homozygous genes often produce a more stable trait expression, while heterozygous combinations can result in variations, especially in dominant-recessive inheritance.