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प्रश्न
Differentiate between male and female heterogamety.
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उत्तर
Male heterogamety: Male heterogamety includes human males having XY sex chromosomes and males of some insects, such as grasshopper and bugs, having XO sex chromosomes.
Female heterogamety: Female heterogamety includes females of some species of birds, fishes and insects. Females of butterfly and moth consist ZO sex chromosomes, while females of fish, reptiles and birds consist ZW sex chromosomes.
संबंधित प्रश्न
The exchange of genetic material takes place in :
(a) vegetative reproduction
(b) asexual reproduction
(c) sexual reproduction
(d) budding
The two versions of a trait (character) which are brought in by the male and female gametes are situated on :
(a) copies of the same chromosome
(b) sex chromosomes
(c) two different chromosomes
(d) any chromosomes
A couple with a newborn baby is troubled that the child does not resemble either of them. Suspecting that a mixup occurred at the hospital, they check the blood type of the infant. It is type O. Because the father is type A and the mother type B, they conclude that a mixup has definitely occurred. Are they correct? Give reason for your answer.
Choose the correct answer:
Chromosomes identical in male and female are called __________
With the help of a chart, explain the method of sex determination in honeybees.
In which livings, female decides the sex? Give two examples.
Write the functional activity of the following structure:
Heterosomes
XO type of sex determination and XY type of sex determination are examples of ____________.
What is haplodiploidy?
What is Lyonisation?
Diploid larvae which get royal jelly as food develops into ____________ and other develops into workers (sterile females).
Which of the following is an example of genetic variation?
Human offspring’s sex is determined ______
If a normal cell of the human body contains 46 pairs of chromosomes then the numbers of chromosomes in a sex cell of a human being is most likely to be ______
A zygote which has an X-chromosome inherited from the father will develop into a
The number of pair (s) of sex chromosomes in the zygote of humans is
A zygote which has Y chromosome inherited from the father will develop into a ______.
