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Old June 3rd, 2014, 03:39 PM
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Default Re: IISC Research Programme BC Biological Sciences Question Paper

Here I am giving you question paper for IISC Research Programme BC Biological Sciences examination in PDF file attached with it ..

5. Evolutionary homology is similarity due to common ancestry. Which of the
following characters are evolutionary homoIogies?
A. wing of a bird and a bat
B. beak of a vulture and an eagle
C. fin of a fish and a whale
D. webbed feet of a duck and a frog

6. Locus A in a diploid organism has two alleles A? and A2, where A1 is dominant
over A2 Additionally A2 is deleterious in the homozygous condition. Allele A2
takes a long time to get eliminated from the population because
A. A1 is harbored in the heterozygote
B. A? is harbored in the homozygote
C. A2 is harbored in the heterozygote
0. A2 is harbored in the homozygote

7. In a population of 100 diploid individuals, the frequency of neutral alleles
A2 are 0.4 and 0.6 respectively. Assuming Hardy-Weinberg equilibrium and no
change in population size, the frequency of heterozygote after five generations
is: -

4 1
Which of the following ions is 1 c r i t h
release at synapses between IF!
er in the event
.I
neurotransmitter
.*
crease in the frequency of firing of action potentials
ecrease in the frequency of firing of action potentials
C. A decrease in the velocity of conduction of action potentials
D. An increase.in the velocity of conductibn of action potentials

10. A songbird species produces specific alarm calls in the presence of aerial
predators such as eagles. On hearing an alarm call, individual songbirds drop
what they are doing and fly into trees. In an observational field study, the
4




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File Type: pdf IISC PHD BIOLOGICAL SCIENCES entrance exam paper.pdf (250.8 KB, 35 views)
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