1
The broken ends of the chromatids behave as if they are 'sticky', and undergo fusion which results in the formation of a
A)
Monocentric chromatid
B)
Dicentric chromatid
C)
Acentric chromatid
D)
Polycentric chromatid
Answer & Solution
Answer: Option
B
2
Darwin finches' refers to a group of
A)
fishes
B)
lizards
C)
birds
D)
amphibians
Answer & Solution
Answer: Option
C
3
The main doctrine of Neo-Lamarckism is that
A)
Only those organisms that have acquired beneficial and relatively good variations survive
B)
The advantageous variations are inherited and gradual accumulation of such variations has given rise to a new species
C)
The adaptation is a general process, and it is the outcome of the interaction between living organisms and the environment
D)
The acquired characters are inherited to the successive generations
Answer & Solution
Answer: Option
C
4
The actual distance between two genes is said to be equivalent to the
A)
Percentage of chromosomes that take part in crossing over
B)
Percentage of crossing over between the genes
C)
Number of linked genes
D)
Number of synaptical complexes formed
Answer & Solution
Answer: Option
B
5
The major steps of prebiotic molecular evolution include
A)
Accumulation of a secondary atmosphere of NH3 , CH4 , H2 O, H2 , CO2 etc. of volcanic origin
B)
Self assembly of polypeptides into protoproteinous protocells
C)
Capture of ATP, pyrophosphate-or-phosphate utilizing mechanism
D)
Capture of nucleic acid-synthesis mechanisms; appearance of ribosomes
Answer & Solution
Answer: Option
A
6
The commonly used osmotic stabilizers to stabilize the newly released protoplasts include
A)
Mannitol
B)
Sorbitol
C)
Ascorbic acid
D)
Both A and B
Answer & Solution
Answer: Option
D
7
Match
List-I with
List-II and select the correct answer:
List-I (Sites of DNA polymerase) List-II (Functions)
a. A template site
1. Contains the primer on which the newly synthesized DNA strand grows
b. A primer site
2. Present at the tip of the primer, which has a terminal 3' OH group
c. A primer terminus site
3. Attaches to the DNA template and holds a section of DNA in place
d. A triphosphate
4. Where an incoming nucleoside triphosphate matches a complementary nucleotide on the DNA template and is bound to the 3' OH position of the primer
A)
a-1, b-2, c-3, d-4
B)
a-3, b-4, c-2, d-1
C)
a-2, b-1, c-4, d-3
D)
a-3, b-1, c-2, d-4
Answer & Solution
Answer: Option
D
8
The three structural elements in eukaryotic chromosomes essential for the commitments of chromosome in the life history of a cell include
A)
Centromere, telomere and chromatid
B)
Telomere, chromatid and replication origin
C)
Chromatid, satellite and replication origin
D)
Centromere, telomere and replication origin
Answer & Solution
Answer: Option
D
9
What determines the sex of a child?
A)
Chromosomes of the father
B)
Chromosomes of the mother
C)
Rh-factor of the parents
D)
Blood group of the father
Answer & Solution
Answer: Option
A
10
Match the following columns.
Column I Column II
a. Darwin
1. Inherited
b. Genetic drift
2. Not inherited
c. Mutation in germ cells
3. HMS Beagle
d. Mutation in somatic cells
4. Founder effect
A)
a-1, b-2, c-3, d-4
B)
a-3, b-4, c-1, d-2
C)
a-3, b-4, c-2, d-1
D)
a-4, b-3, c-2, d-1
Answer & Solution
Answer: Option
B
