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प्रश्न
Choose the correct answer :
Human sex chromosomes are __________
पर्याय
X and O
Y and O
X and Y
none of these
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उत्तर
Human sex chromosomes are X and Y
APPEARS IN
संबंधित प्रश्न
How is the sex of the child determined in human beings?
A new born child has an XY pair of chromosmes. Will it be a baby boy or a baby girl?
Fill in the following blank with suitable word :
Genes always work in ................ .
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
The person A has only B chromosomes in all its gametes. On the other hand, another person C has chromosome D in half of gametes and chromosome E in the other half of gametes. When chromosomes B and D combine during fertilisation, a female zygote results. On the other hand, combination of B and E chromosomes produces a male zygote.
(a) What are chromosomes (i) B (ii) D, and (iii) E?
(b) Out of B, D and E, which two chromosomes are of the same type?
(c) Which chromosome is smaller in size?
(d) What is the general name of chromosomes such as B and E?
(e) Out of the two persons A and C, which one is (i) male, and (ii) female?
ZZ/ZW type of sex determination is seen in ______.
A man with blood group A marries a woman having blood group O. What will be the blood group of the child?
Name the two types of gametes produced by men.
What is sex determination? Explain the mechanism of sex determination in the case of birds.
A zygote which has Y chromosome inherited from the father will develop into a ______.
