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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 sex determination in human beings.
There are ................ pairs of chromosomes in the human being.
Which of the following combinations of sex chromosomes produce a male child : XX or XY?
Explain how, sex is determined in human babies.
The sex of a child is determined by which of the following?
(a) the length of the mother's pregnancy
(b) the length of time between ovulation and copulation
(c) the presence of and X chromosome in an ovum
(d) the presence of a Y chromosome in a sperm
Name any two genetic in humans.
Why did T. H. Morgan select Drosophila melanogaster to study sex linked genes for his lab experiments ?
What is heterogamety ? Explain the mechanism of sex determinatin in Drosophila.
Choose the correct answer :
Human sex chromosomes are __________
Short Answer Question.
“Father is responsible for determination of sex of child and not the mother”. Justify.
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.
XO type of sex determination and XY type of sex determination are examples of ____________.
ZW-ZZ system of sex determination occurs in
What is Lyonisation?
Brief about female heterogamety.
From the following which option correctly represents the normal genetic constitution of a ovum?
Match the items of Column I with Column II:
| Column I | Column II | ||
| i. | XX-XO method of Sex Determination | a. | Turner syndrome |
| ii. | XX-XY method of Sex Determination | b. | Female heterog ametic |
| iii. | karyotype-45 | c. | Grasshopper |
| iv. | ZW-ZZ method of Sex Determination | d. | Female homogametic |
A man with blood group A marries a woman having blood group O. What will be the blood group of the child?
A woman has only daughters. Analyse the situation genetically and provide a suitable explanation.
