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Write the chromosomal basis of sex deter...

Write the chromosomal basis of sex determination in birds.

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### Step-by-Step Solution: 1. **Understanding Chromosomal Basis**: In birds, sex determination is based on the presence of specific sex chromosomes, known as allosomes. This system differs from that of humans. 2. **Male Chromosomes**: Male birds have two identical sex chromosomes, designated as ZZ. This means they are homozygous for the sex chromosomes. 3. **Female Chromosomes**: Female birds have two different sex chromosomes, designated as ZW. This indicates that they are heterozygous for the sex chromosomes. ...
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