Haemophilia is more common in males because it is a ______.

(a)

Recessive character carried by Y-chromosome

(b)

Dominant character carried by Y-chromosome

(c)

Dominant trait carried by X-chromosome

(d)

Recessive trait carried by X-chromosome

Which of the following phenotypes is not possible in the progeny of the parental genotypic combination I^AI^O x I^AI^B?

(a)

AB

(b)

O

(c)

A

(d)

B

What can be the blood group of offspring when both parents have AB blood group?

(a)

AB only

(b)

A, B and AB

(c)

A, B, AB and O

(d)

A and B only

If the childs blood group is ‘O’ and fathers blood group is ‘A’ and mother’s blood group is ‘B’ the genotype of the parents will be ______.

(a)

I^A I^A and I^B I^o

(b)

I^A I^o and I^B I^o

(c)

I^A I^o and I^oI^o

(d)

I^oI^o and I^B I^B

XO type of sex determination and XY type of sex determination are examples of ______.

(a)

Male heterogamety

(b)

Female heterogamety

(c)

Male homogamety

(d)

Both (b) and (c)

What is Lyonisation?

What are holandric genes?

Mention the symptoms of Phenylketonuria

What is male heterogamety?

Brief about female heterogamety.

Give an account of genetic control of Rh factor.

Explain the inheritance of sex linked characters in human being.

Comment on the methods of Eugenics.