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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
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संबंधित प्रश्न
Which of the following combinations of sex chromosomes produce a male child : XX or XY?
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
A family consists of two parents and their five children and the pedigree chart below shows the inheritance of the trait colour blindness in them.
Who is colour blind in the parents – the Father or the Mother?
ZW-ZZ system of sex determination occurs in
What is Lyonisation?
What is male heterogamety?
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 |
Which of the following is incorrect regarding ZW - ZZ type of sex determination?
The belief that the mother is completely responsible for the sex of the child is wrong because the child
