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प्रश्न
The sex chromosome in a human ovum is ______.
विकल्प
X chromosome
Y chromosome
Both X and Y chromosomes
Either X or Y chromosome
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उत्तर
The sex chromosome in a human ovum is X chromosome.
Explanation:
Every egg has an X sex chromosome; a sperm can have either an X or a Y sex chromosome.
APPEARS IN
संबंधित प्रश्न
Differentiate between ‘ZZ’ and ‘XY’ type of sex-determination mechanisms.
Write notes on sex determination in the unborn baby.
Which of the following is an example of ZW – ZZ type of mechanism of sex determination?
What are the chromosomes XY and XX known as?
Name two animals which have nineteen pairs of chromosomes.
Explain the following terms:
Identical twins
With the help of a chart, explain the method of sex determination in honeybees.
Drone of the honeybees shows haploid number of chromosomes. Illustrate.
Give Technical Term:
The cell which determines the sex of a baby.
All human chromosomes ate not paired. Most human chromosomes have a maternal and a paternal copy, and we have 22 such pairs. But one pair called the sex chromosomes, is odd in not always being a perfect pair. Women have a perfect pair of sex chromosomes. But men have a mismatched pair in which one is normal sized while the other is a short one.
(a) In humans, how many chromosomes are present in a Zygote and in each gamete?
(b) A few reptiles rely entirely on environmental cues for sex determination. Comment.
(c) "The sex of a child is a matter of chance and none of the parents are considered to be responsible for it." Justify it through flow chart only.
OR
(c) Why do all the gametes formed in human females have an X chromosome?
