41.

Match the following Columns.

Column I	Column II
A. Interferons	1. Fab
B. Paratope	2. Inflammatory mediators
C. Interlukins	3. Antiviral proteins
D. Histamine	4. White blood cells
	5. Anticoagulant

• A- 3; B- 1; C- 2; D- 4

• A- 3; B- 1; C- 4; D- 2

• A- 3; B- 4; C- 5; D- 2

• A- 3; B- 2; C- 4; D- 5

Read the following about pollution and identify the correct matching combinations.

• III, II, I

• IV, III, II

• I, II, IV

• I, III, IV

Study the following with regard to spermatogenesis.

I. Spermatogonia

II. Secondary spermatocyte

III. Spermatogonial stem cells

IV. Primary spermatocyte

V. Spermatid

Arrange them in the correct sequence.

• III, IV, II, I, V

• III, I, IV, II, V

• I, II, III, IV, V

• III, IV, I, II, V

Choose the correct statements regarding genetic disorders.

I. Turner's female is result of aneuploidy.

II. Tritanopia is a sex-linked recessive disorder.

III. Haemophilia-C follows criss-cross pattern of inheritance.

IV. Sickel cell anaemia is due to mutation of alleles in chromosome 11.

• I, IV

• II, III

• I, III

• II, III

The type of mutation in the nucleotide sequence given below is

• Transition

• Transversion

• Deletion

• Inversion

Marfan syndrome, a dominant single gene defect is characterised by lens dislocation, long limbs, spindly fingers, caved in chest and weakened aorta. This is an example of

• Complete dominance

• Epistasis

• Pleiotropy

• Codominance

Pyramid of biomass is more real than the pyramid of number; because

• The former take the size of individuals into consideration, but the later does not

• Number of individuals are easier to count than calculating biomass

• Less number of parameters are considered in the former, but the later accounts the whole existing conditions

• The former may be inverted in some cases, but the later is always upright

The replacement of a normal gene by its specifically mutated copy is

• Gene cloning

• Gynogenesis

• Gene knockout

• lnterparietal hybridisation

The phase involved in the process of spermateliosis is

• Multiplication phase

• Growth phase

• Maturation phase

• Differentiation phase

The direct ancestor of the living modern man is

• Homo erechis

• Homo neanderthalensis

• Homo sapiens fossils

• Homo sapiens sapiens