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Subjects
Science CBSE
Class 10
Heredity and evolution
Textbook questions
19.
Intext question VI
Exercise condition:
3
m.
How is the sex of the child determined in human beings?
a
. Humans have ________ chromosome pairs.
21
22
23
b
. How many autosomes and allosomes are there in humans?
(23+2) pairs
(22+1) pairs
(23+1) pairs
c
. Choose the correct statement from the options given.
Males have X chromosomes, and females have X and Y chromosomes.
Males and females have X and Y chromosomes.
Females have X chromosomes, and males have X and Y chromosomes.
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