Sex Determination

Q. What do you mean by homologous chromosomes? How are they different from heterologous chromosomes?

Q.

Every sperm has ___ sex chromosomes.

Q. What are homologous chromosomes and non homologous chromosomes ?

Q. Which of the following are true about cell division?

1. Cell division occurs to replace old cells
2. Cell division occurs to form gametes required for reproduction
3. Two types of cell division are mitosis and meiosis
4. Cell division is not responsible for growth of an individual

Q.

Give reasons for the following:

(iii) It is a matter of chance whether a couple will give birth to a boy or a girl.

Q.

Mother is responsible for the sex of the baby.

1. Mother

2. Father

Q. How many pairs of chromosome does a new born baby have?

Q.

Is Klinefelter Syndrome passed down through generations?

Q.

Ovum always carries __chromosome.

Q. Typhoid is diagnosed by ________.

1. ultrasound
2. widal test
3. PCR
4. biopsy

Q.

The belief that the mother is completely responsible for the sex of the child is wrong because the child

1. gets sex chromosome only from the mother

2. develops in the body of the mother

3. gets one sex chromosome from the mother and the other from the father

4. gets sex chromosome only from the father

Q. A congenital disease is

1. Kalaazar
2. Meningitis
3. Sickle cell anaemia
4. Measles

Q. Which of the following determines the sex of a child?

1. Duration of copulation
2. Implantation duration
3. Chromosome in a sperm
4. Chromosome in an ovum

Q. As per Denver Convention, the autosomes of man have been classified in _______ groups

1. 7
2. 4
3. 16
4. 3