74.

75.

76.

77.

78.

79.

80.

The S wave of normal human ECG originates due to the
(A) Left to right septal depolarization
(8) Reprolanzation of atrium
(C) Septal and left ventricular depolarization
(D) Late depolarization of the ventricular walls moving back toward the AV
junction

Two siblings who inherit 50% of the genome from the mother and 50% from the father
show lots of phenotypic differences. Which one of the following events during
gametogenesis of the parents will maximally contribute to this difference ?

(A) Mutation (B) Independent assortment

(C) Recombination (D) Environment

Nick translation is done by
(A) DNA polymerase I (B) Kinase
(C) DNA ligase (D) DNA polymerase II

The philadelphia chromosome
(4) An example of gene amplification
(8) A product of a reciprocal translocation
(C) Causes retinoblastoma
(D) Causes Burkitt’s lymphoma

Which of the following is true regarding Anthrax ?
(ಹಿ) Anthrax is highly contagious
(B) Anthrax is caused by a virus
(C) Inhalation anthrax requires infection with a large number of spores
(D) Inhalation anthrax and cutaneous anthrax are caused by separate strains of
Bacillus anthracis

Capacilation of sperms in humans
(ಹಿ) Takes place in the ampulla of the oviduct
(B) Occurs during copulation
(C) Occurs after the acrosome reaction
(D) Takes place in the epididymis of testis

Which one of the following technique is generally used to produce transgenic animals ?
(A) Entire foreign nucleus is introduced in exnucleated unfertilized egg.
(B) Desired DNA is microinjected into fertilized eggs followed by implantation
of embryo in a foster mother
(C) Processed mRNA containing only exones are introduced into blastocyst stage
embryo.

(D) cDNA of desired gene is introduced into animal embryos and implanted in a
foster mother

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[P.T.O.]