It is unfortunate that in our society women are blamed for producing female children and have been ostracised and ill-treated because:

1.	The sex is determined by the type of sperm fertilizing the egg
2.	The sex is determined by the type of egg fertilizing the sperm
3.	The sex is determined by the hormones produced by the fetus
4.	The sex is determined by the God’s will

The family pedigree of Queen Victoria shows a number of haemophilic descendants as she was:
1. Affected by the disease
2. Carrier for the disease
3. Did not carry the allele for hemopihilia
4. Was not a queen

Which of the following amino acid substitution in the beta chain of the haemoglobin molecule leads to the development of sickle cell anaemia?
1. Arginine by tyrosine                  2. Tyrosine by phenylalanine
3. Valine by Glutamic acid             4. Glutamic acid by Valine

An organism with two different alleles is:

1. Homozygous for that trait
2. Homologous for the allele
3. Heterozygous for the trait
4. Heterologous for the allele

Which one of the following trait is only expressed in the presence of identical allele?

1.  Yellow seed

2.  Inflated pod

3.  Green pod

4.  Green seed

Find incorrect match

1. Polygenic inheritance – Spread across of gradient.

2. Pleiotropy – Single gene multiple phenotype.

3. X body of henking – One each in sperm.

4. Pedigree analysis – Mendelian trait.

How many of the following statements are correct?
(1) Phenyl ketonuria leads to mental retardness.
(2) Thalassemia is quantitative where as sickle-cell anaemia is qualitative.
(3) Possibility of female becoming haemophilic is extramely rare.
(4) 8% of male & 0.4% of females are haemophilic.

Options

1. All 

2. 3

3. 2 

4. 1

Which of the following traits in the garden pea plant would express itself only in homozygous condition?

1.  Violet flower color

2.  Terminal flower position

3.  Green pod color

4.  Yellow seed color

All the following are examples of Mendelian disorders except:

1.  Hemophilia

2.  Sickle cell anemia

3.  Phenylketonuria

4.  Down's syndrome

The pure line round seeded pea plant was crossed with wrinkled seeded pea plant. The F1 generation is ____ and it can be explained by _____. (respectively)

1. Wrinkled : Law of segregation

2. Round : law of dominance

3. Round : Condominance

4. Wrinkled : Law of dominance