Question
Explain sex determination in birds in short.
✓
Answer
→ In some other organisms, e.g. birds, a different mechanism of sex determination is observed.
→ In this case the total number of chromosomes is same in both males and females.
→ But two different types of gametes in terms of the sex chromosomes, are produced by females, i.e. female heterogamety.
→ In order to have a distinction with the mechanism of sex determination described earlier, the two different sex chromosomes of a female bird have been designated to be the Z and W chromosomes.
→ In these organisms, the females have one Z and one W chromosomes, whereas males have a pair of Z-chromosomes besides the autosomes.
→ In this case the total number of chromosomes is same in both males and females.
→ But two different types of gametes in terms of the sex chromosomes, are produced by females, i.e. female heterogamety.
→ In order to have a distinction with the mechanism of sex determination described earlier, the two different sex chromosomes of a female bird have been designated to be the Z and W chromosomes.
→ In these organisms, the females have one Z and one W chromosomes, whereas males have a pair of Z-chromosomes besides the autosomes.
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