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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.
संबंधित प्रश्न
Explain sex determination in human beings.
In a human, how many chromosmes are present in a fertilised egg?
The number of pair(s) of sex chromosomes in the zygote of humans is ______.
What is heterogamety ? Explain the mechanism of sex determinatin in Drosophila.
Choose the correct answer:
A single recessive trait, able to express must be on _________
Choose the correct answer:
A man can transfer his sex-linked gene to his ______________
The number of pair (s) of sex chromosomes in the zygote of humans is
Female heterogamy is shown by
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?
Which pair of sex chromosome will determine a male?
