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प्रश्न
Also describe as to, who determines the sex of an unborn child? Mention whether temperature has a role in sex determination.
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उत्तर
As a rule the heterogametic organism determines the sex of the unborn child. In case of humans, since males are heterogametic it is the father and not the mother who decides the sex of the child. In some animals like crocodiles, lower temperature favour hatching of female offsprings and higher temperatures lead to hatching of male offsprings.
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संबंधित प्रश्न
How is the sex of the child determined in human beings?
There are ................ pairs of chromosomes in the human being.
Explain the mechanism of 'sex determination' in birds. How does it differ from that of human beings?
In a human, how many chromosmes are present in a skin cell?
The human animal which has an XY pair of chromosomes is called :
(a) male
(b) hybrid
(c) female
(d) doomed
A normal cell of human body contains 23 pairs of chromosomes. The number of chromosomes in a sex cell (sperm or ovum) of a human being is most likely to be :
(a) 46
(b) 23
(c) 21
(d) 42
Give Reason:
Why X-linked recessive diseases are more common among males than females.
Complete the following sentence with appropriate word:
___________ chromosomes do not take part in sex determination.
Write the functional activity of the following structure:
Heterosomes
Which of the following is incorrect regarding ZW-ZZ type of sex determination?
Explain the mode of sex determination in honeybees.
Diploid larvae which get royal jelly as food develops into ____________ and other develops into workers (sterile females).
The ‘X’ body of Henking was observed in ______.
Haplodiploidy is found in ______.
The number of pairs of sex chromosomes in the zygote of a human being is ______
Which of the following decides the sex of the child?
A woman has only daughters. Analyse the situation genetically and provide a suitable explanation.
What is sex determination? Explain the mechanism of sex determination in the case of birds.
In the haplodiploidy system observed in honeybees, unfertilized eggs develop into which type of individual?
How does the haplodiploidy system differ from the XX–XY, XX–XO, and ZW–ZZ systems in determining sex?
