ABO blood group in man is controlled by _____.

(a)

Multiple alleles

(b)

Lethal genes

(c)

Sex linked genes

(d)

Y-linked genes

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

The _______deals with the control of several inherited human diseases especially inborn errors of metabolism

(a)

Euphenics

(b)

Eugenics

(c)

Euthenics

(d)

All of these

ZW-ZZ system of sex determination occurs in _____.

(a)

Fishes

(b)

Reptiles

(c)

Birds

(d)

All of these

Which of the following is incorrect regarding ZW-ZZ type of sex determination?

(a)

It occurs in birds and some reptiles

(b)

Females are homogametic and males are heterogametic

(c)

Male produce one type of gamete

(d)

It occurs in gypsy moth

The secretors have the I allele in _______.

(a)

tears

(b)

Gastric juice

(c)

Saliva

(d)

All of these

Sex index is applicable to ________.

(a)

Homogenetic condition

(b)

Heterogametic condition

(c)

Genic balance

(d)

Gynandromorphs

__________ are examples of mendelian disorders.

(a)

Thalassemia

(b)

Albinism

(c)

Phenylketonuria

(d)

Haemophilia

The gene responsible for ________ is inherited as an autosomal recessive lethal gene in man

(a)

Huntington's chorea

(b)

Albinism

(c)

Colourblindness

(d)

Phenylketonuria

One gene 'L' controlling blood groups is named after_________.

(a)

c. B. Bridges

(b)

Henking

(c)

Landsteiner

(d)

Stevens