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Question
Fill in the following blank with suitable word :
The...............chromosomes for a ............are XX whereas that for a ..............are XY.
Solution
The sex chromosomes for a female are XX, whereas that for a male are XY
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RELATED QUESTIONS
Answer the following questions related to sex determination in human beings:
i. What is sex chromosome?
ii. How many pairs of chromosomes are present in human beings?
iii. How is the sex of the human offspring determined?
iv. Draw a diagram depicting sex determination in man.
Differentiate between 'ZZ' and 'XY' type of sex-determination mechanisms.
"The sex of a newborn child is a matter of chance and none of the parents may be considered responsible for it". Draw a flow chart showing determination of sex of a newborn to justify this statement.
In a human, how many chromosmes are present in a fertilised egg?
A zygote which has inherited an X chromosome from the father will develop into :
(a) baby boy
(b) baby girl
(c) adult
(d) either boy or girl
Explain the following terms:
Identical twins
Read the following statements and select the correct option.
i. If sperm containing Y chromosome fertilizes the ovum, then diploid zygote is formed that grows into a male child.
ii. If sperm containing X chromosome fertilizes ovum, then diploid zygote is formed, that grows into a female child.
Sex is determined in human beings ______.
Which of the following decides the sex of the child?
Also describe as to, who determines the sex of an unborn child? Mention whether temperature has a role in sex determination.
