11. The map generated by interrupted conjugation is marked off in units of
A) Frequency of mutation
B) Average number of crossing over
C) Length of DNA transferred
D) Time required for transfer
12. Choose
the statements which is/are true?
1. If two
transposons in opposite orientation on the same chromosome pair and cross over,
the segments between them will be inverted
2. If two
transposons in the same orientation on the same chromosome pair and cross over,
the segments between them will be deleted
3. If two
transposons in opposite orientation on the same chromosome pair and cross over,
the segments between them will be deleted
4. If two
transposons in the same orientation on the same chromosome pair and cross over,
the segments between them will be inverted
A) 1&4
B) 1&2
C) 2 & 3
D) 1 only
13. In a
randomly mating population, a gene P has three alleles, P1, P2, and P3 with frequencies
0.2, 0.3 and 0.5 respectively. The combined frequencies of all heterozygote in
this population are:
A) 2 B) 1 C)
0.03 D) 0.62
14.
Haemophilia is caused by X-linked recessive allele. In a particular population
the frequency of males with Haemophilia is 1/5000. Calculate the expected
frequency of females with Haemophilia:
A) 0.0002 B)
(0.0002)2 C) 0.0004 D) 0.0001
15.
Immediately after the synthesis of mRNA:
A) Methyl
guanosine is added to 5’ end and Poly (A) tail is added to 3’ end of mRNA
B) Methyl
guanosine is added to 3’ end and Poly (A) tail is added to 5’ end of mRNA
C) Methyl
cytosine is added to 3’ end and Poly (A) tail is added to 5’ end of mRNA
D) None of
the above reactions will happen
16. Choose
the statements which is/are correct about protein glycosylation:
1) The
N-linked glycosylation begins in the ER and continues in the Golgi-complex
2) The
N-linked glycosylation takes place exclusively in the Golgi-complex
3) The
O-linked glycosylation begins in the ER and continues in the Golgi-complex
4) The
O-linked glycosylation takes place exclusively in the Golgi-complex
A) 1 only B)
2 & 3 C) 4 only D) 1 & 4
17. During
cancer treatment hair loss is a common. The reason behind this is:
1) Skin is
comparatively more vascularized than other tissues
2) The
therapeutic agent is a keratin inhibitor
3) The
therapeutic agent inhibits the proliferating cells in the hair
4) The
therapeutic agent activates new hair formation
A) Only 1 is correct
B) Only 2 & 3 are correct
C) Only 3 is correct
D) Only 3 & 4 are correct
18.
Slow-twitch (type I fibers) are thinner, with a denser capillary web, and
appear red owing to the existence of a great amount of-----.
A) Myoglobin
B) Haemoglobin
C) Low glycogen levels
D) High mitochondrial numbers
19. When
freshly isolated intact mitochondria were incubated with ADP and inorganic phosphate
neither the oxygen consumption nor the ATP synthesis could be detected. Addition
of succinate resulted in increased oxygen consumption as well as ATP synthesis
with time. Subsequent addition of cyanide to this system will result in whichone
of the following?
A) Both
oxygen consumption and ATP synthesis are inhibited
B) Oxygen
consumption continues but ATP synthesis is inhibited
C) Oxygen
consumption is inhibited but ATP synthesis continues
D) Both
oxygen consumption and ATP synthesis continue
20.
Saccharose is a synonym for------.
Learn more: Biotechnology MCQ Topic wise