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प्रश्न
Explain the mechanism of sex determination in birds.
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उत्तर
- In birds, the chromosomal mechanism of sex determination is ZW-ZZ type.
- In this type females are heterogametic and produce two types of eggs; 50% of eggs carry Z-chromosome, while 50% of eggs carry W- chromosome.
- Males are homogametic and produce one type of sperms. Each sperm carries a Z chromosome.
- Thus, the sex of an individual depends on the kind of egg (ova) fertilized by the sperm.
संबंधित प्रश्न
Explain the mechanism of 'sex determination' in birds. How does it differ from that of human beings?
Explain the following terms:
Identical twins
Choose the correct answer:
A man can transfer his sex-linked gene to his ______________
With the help of a chart, explain the method of sex determination in honeybees.
Explain the haplo-diploid method of sex determination in the honey bee.
Kavitha gave birth to a female baby. Her family members say that she can give birth to only female babies because of her family history. Is the statement given by her family members true? Justify your answer.
How many ovum are formed when a diploid cell undergoes meiosis, during oogenesis?
Diploid larvae which get royal jelly as food develops into ____________ and other develops into workers (sterile females).
Which of the following decides the sex of the child?
Which pair of sex chromosome will determine a male?
