A male produces two types of gametes half containing X chromosomes and half containing Y chromosomes.

True

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False

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Solution

The correct option is A True
1. Both males and females have two sex chromosomes.
2. Human female has two X chromosomes which are located in a homologous pair.
3. Human male has also two sex chromosomes, X and Y, but they are not located in homologous pairs. The genes that are carried show a unique pattern of inheritance.
Thus male produces two types of gametes.

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Similar questions

The person A has only B chromosomes in all its gametes. On the other hand, another person C has chromosomes D in half of the gametes and chromosome E in the other half of gametes. When chromosomes B and D combine during fertilisation, a female zygote results. On the other hand, the combination of B and E chromosomes produces a male zygote.

(a) What are chromosomes (i) B (ii) D, and (iii) E?

(b) Out of B, D and E, which two chromosomes are of the same type?

(d) What is the general name of chromosomes such as B and E?

(e) Out of the two persons A and C, which one is (i) male, and (ii) female?

The two versions of a trait (character) which are brought in by the male and female gametes are situated on :

(a) copies of the same chromosomes (b) sex chromosomes

State whether the following statements are true or false :

(a) The estrogen hormone develops deeper voice in males at puberty.

(b) Menstruation stops in men permanently around the age of 45 to 50 years.

(d) The sex chromosomes in all the gametes (sperms) of a man are not identical.

(e) Half the female gametes contain X chromosomes and the other half contain Y chromosomes.

(f) It is the sperm which determines the sex of a child.

(g) Each normal cell in our body contains 23 chromosomes.

(h) A girl should not be allowed to work in the kitchen during menstruation.

(i) A woman (mother) is responsible for the sex of her child.

(j) Metamorphosis in insects (like silk moth) is brought about by thyroxine hormone.

Q. State whether the following statements are true or false: (e) Half the female gametes contain X chromosomes and the other half contain Y chromosomes.

Q. If half the total number of chromosomes that is 23 from both tha male and the female gametes fuse to form a baby of normal 46 chromosomes, then how the sperms or eggs produced by this baby when it become adult contain only 23 chromosomes and not 46 normal chromosomes?

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