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प्रश्न
Choose the correct answer from the four options given below :
In a human male, a sperm will contain :
पर्याय
Both X and Y chromosomes
Only Y chromosome
Only X chromosome
Either X or Y chromosome
उत्तर
Either X or Y chromosome
APPEARS IN
संबंधित प्रश्न
What are the chromosomes XY and XX known as?
Which combination of genes in the zygote will produce children with blue eyes?
Which combination of genes in the zygote will produce children with brown eyes?
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?
Give Reason:
Why X-linked recessive diseases are more common among males than females.
Sex is determined in human beings ______.
Fill the blank circles in figure and identify the sex of child A and B. 
Also describe as to, who determines the sex of an unborn child? Mention whether temperature has a role in sex determination.
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?
