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Sex Determination

Which type of...

Question

Which type of sex chromosomes are carried by male gametes-sperms in human male?

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Solution

Sex chromosomes carried by male gametes-sperms in human male are XY.

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Q. Match the following

	List I		List II
A	In human beings and a number of other animals, there are two types of chromosomes, ______, and allosomes.	1	44+XY
B	_______ are those chromosomes which control functions of the body, other than sex determination. Allosomes or sex chromosomes are the chromosomes that determine the sex of the individual in unisex organisms.	2	Autosomes
C	Human beings have _____ pairs of chromosomes.	3	23
D	_____ determine the sex of the individual.	4	Sex chromosomes
E	The two sex chromosomes of females are similar and are called _____ chromosomes. They are dissimilar in human males. One is a normal-sized X-chromosome. The other is smaller with a good amount of non-function chromatin. It is called the Y-chromosome.	5	XX
F	The chromosome complement of human females is ______	6	44+XX
G	Human males is _____. Human females are homogametic, i.e., produce only one type of gametes or ova (22 + X). Humans are heterogametic, i.e., they produce two types of gametes sperms, angiosperms, and gymnosperms.	7	Autosomes

(a) What are the male gametes in humans called ?

(b) Name the organs which produce male gametes

Q. Assertion :Urethra in human male acts as urinogenital canal. Reason: Urethra carries only urine while sperms are carried by vasa eferentia only.

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