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प्रश्न
Write the types of sex-determination mechanisms the following crosses show. Give an example of each type.
(i) Female XX with Male XO
(ii) Female ZW with Male ZZ
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उत्तर
(i) The type of sex determination mechanism shown in female XX with male XO is male heterogamety.
Example- Humans
(ii) The type of sex determination mechanism shown in female ZW with male ZZ is female heterogamety.
Example- Birds
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संबंधित प्रश्न
A new born child has an XY pair of chromosmes. Will it be a baby boy or a baby girl?
The human animal which has an XY pair of chromosomes is called :
(a) male
(b) hybrid
(c) female
(d) doomed
Why did T. H. Morgan select Drosophila melanogaster to study sex linked genes for his lab experiments ?
Choose the correct answer:
Chromosomes identical in male and female are called __________
Drone of the honeybees shows haploid number of chromosomes. Illustrate.
What is male heterogamety?
Read the following statements and select the correct option.
i. If sperm containing Y chromosome fertilizes the ovum, then diploid zygote is formed that grows into a male child.
ii. If sperm containing X chromosome fertilizes ovum, then diploid zygote is formed, that grows into a female child.
Diploid larvae which get royal jelly as food develops into ____________ and other develops into workers (sterile females).
Haplodiploidy is found in ______.
The maleness of a child is determined by ______
