Advertisements
Advertisements
Question
Does the sex of the child depend on the father or it is just a matter of chance? Discuss.
Advertisements
Solution
The sex of the child depends on the father. The egg contains only one X chromosome, but half of the sperm contain an X chromosome whereas the other half contains a Y chromosome. It is simply a matter of chance as to which category of sperm fuses with the ovum and this determines whether the child will be male or female.
If the egg fuses with X-bearing sperm, the resulting combination is XX and the resulting child is female. If the egg fuses with Y-bearing sperm, the resulting combination is XY and the resulting child is male.
APPEARS IN
RELATED QUESTIONS
Differentiate between ‘ZZ’ and ‘XY’ type of sex-determination mechanisms.
Choose the correct answer from the four options given below :
In a human male, a sperm will contain :
Choose the correct answer :
Human sex chromosomes are __________
Choose the correct answer:
A single recessive trait, able to express must be on _________
What is parthenogenesis?
Distinguish between heterogametic and homogametic sex determination systems.
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 |
ZZ/ZW type of sex determination is seen in ______.
Number of autosomes present in liver cells of a human female is ______.
How many types of gametes are produced by a human female?
