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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
Explain the mechanism of sex determination in birds.
Explain how, sex is determined in human babies.
A zygote which has inherited an X chromosome from the father will develop into :
(a) baby boy
(b) baby girl
(c) adult
(d) either boy or girl
E is the gene for brown eye colour and an is the gene for blue eye colour. which gene is (1) recessive, and (2) dominant?
________ shows haplo-diploid type of sex-determination.
Define the following:
Autosomes
Give Technical Term:
The cell which determines the sex of a baby.
What is parthenogenesis?
Differentiate Intersexes from Supersexes.
Which type of sex determination is observed in honey bee?
Sex is determined in human beings ______.
Which of the following is incorrect regarding ZW - ZZ type of sex determination?
The maleness of a child is determined by ______
Which of the following statements is not true with respect to variation?
The number of pair (s) of sex chromosomes in the zygote of humans is
Sex of an individual is determined by different factors in various species. Some animals rely entirely on the environmental ones, while in some other animals the individuals can change their sex during their life time indicating that sex of some species is not genetically determined. However in human beings, the sex of an individual is largely determined genetically.
- In what way are the sex chromosomes 'X' and 'Y' different in size? Name the mismatched pair of sex chromosome in humans.
- Write the number of pair/pairs of sex chromosomes present in human beings. In which one of the parent (male/female) perfect pair/pairs of sex chromosome are present?
- Citing two examples, justify the statement "Sex of an individual is not always determined genetically".
OR
Draw a flow chart to show that sex is determined genetically in human beings.
Which of the following group shows ZW-ZZ type of sex determination?
