Match each item in COLUMN I with one in COLUMN II and select your answer from the codes given:

COLUMN I	COLUMN II
SCIENTIST	CONTRIBUTION
Francis Crick	a. Breaking the genetic code
Nirenberg	b. Established Caenorhabditis elegans as a model genetics  study organism
Benzer	c. Central dogma of molecular biology
Brenner	d. Bacteriophase genetics

	A	B	C	D
1.	c	a	d	b
2.	c	a	b	d
3.	a	b	c	d
4.	a	c	d	b

Identify the incorrect statement regarding experiments on Pisum sativum by Gregor Mendel?

Which of the following is a recessive trait for a character choosen by Mendel in garden pea?

1. Violet flower color

2. Yellow pod color

3. Axial flower position

4. Tall stem height

Genes which code for a pair of contrasting traits or slightly different forms of the same gene are known as

1. Alleles

2. Loci

3. Cistrons

4. Introns

Indentify the incorrect statement:

1. Tall plant produce gametes by meiosis and the dwarf plants by mitosis.

2. Only one allele is transmitted to a gamete.

3. The segregation of alleles is a random process.

4. Gametes will always be pure for the trait.

The law of Segregation is based on the fact that

(1) The Alleles do not show any blending

(2) There is random fertilization

(3) Gametes are pure for the trait

(4) The zygotes are diploid

The ultimate source of allelic variation is:

(1) Recombination

(2) Natural selection

(3) Mutation

(4) Drift

In the case of co-dominance, the F₁ generation resembles:

(1) Dominant parent

(2) Recessive parent

(3) Both the parents

(4) None of the parents

What can be the possible blood groups of progeny whose father and mother are of A and B group respectively?

(1) A and B only

(2) AB only

(3) All except O

(4) A, B, AB and O

Suppose a gene has seven alleles. What would be the number of alleles in an individual at any instant?

(1) 1

(2) 7

(3) 2

(4) 3