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Genetics- Part 3
See all quizzes of Genetics- Part 3 here:
1 Gene which results in a non-viable progeny in homozygous
condition is known as ?
A. Duplicate gene
B. Lethal gene
C. Linked gene
D. Epistatic gene
2 Enzyme that influences DNA synthesis that binds to one strand of
DNA in 3′ to 5′ direction, using single-stranded DNA as a template
is ?
A. DNA Polymerase
B. DNA Ligase
C. Topoimerase
D. Telomerase
3 Which of the following DNA is present only in female gametes ?
A. Nuclear DNA
B. Mitochondrial DNA
C. Plasmid DNA
D. Satellite DNA
4 The name of the mechanism wherein a grandchild has an earlier
onset and more severe disease than the parent, who had earlier
onset than the grandparent is ?
A. Anticipation
B. Pentrance
C. Backcross
D. Familial
5 What is the situation called in which two different alleles for a
genetic trait are both expressed ?
A. Codominance
B. Dominant
C. Recessive
D. Autosomal
6 Which amongst the following DNA is synthesized in laboratories
from messenger RNA template ?
A. Complementary DNA
B. Template DNA
C. Plasmid DNA
D. Satellite DNA
7 What is the name for the study of ‘physical appearance of
chromosomes’ ?
A. Cytogenetics
B. Cytokinesis
C. Cytomorphics
D. Karyotype
8 In electrophoresis, DNA molecule will move towards ?
A. Cathode
B. Anode
C. Neutral
D. None
9 Process of identification of multiple specific alleles on a person’s
DNA to produce a unique identifier for that person is called ?
A. Finger printing
B. Thumb printing
C. DNA printing
D. Blue printing
10 Which is the largest known gene in human genome ?
A. Dystrophin
B. CFTR
C. MEN1
D. BRCA1
11 Which syndrome results when the genetic constitution is XO ?
A. Turner syndrome
B. Down syndrome
C. Klinefelter syndrome
D. Marfan syndrome
12 The number of ‘Barr bodies’ in a person suffering from Turner
syndrome is ?
A. Zero
B. One
C. Two
D. Three
13 Which of the following does not associate with Klinefelter
syndrome ?
A. 47, XXY
B. Mosaic 46, XY
C. XXY trisomy
D. 46, XY
14 Through which biological process do two pieces of a chromosome
pair separate during meiosis and randomly distribute to the germ
cells ?
A. Segregation
B. Propagation
C. Cleavage
D. Separation
15 All are classical features of Down syndrome except ?
A. Hypotonia
B. Mental retardation
C. Palmar crease
D. Loss of memory
16 DNA replication takes place in which phase of cell cycle ?
A. G0
B. G1
C. G2
D. S
17 The formation of structural & functional proteins, RNA and
enzymes take place in cell cycle during ?
A. G0 phase
B. G1 phase
C. G2 phase
D. S stage
18 Formation of cell plate is completed in which phase of cell cycle ?
A. Mitotic phase
B. Cell division
C. Growth phase
D. All of the above
19 Period between two successive mitotic divisions is ?
A. Growth period
B. Interphase
C. Gap period
D. Synthetic period
20 The phase of cell division during which the chromosome number
is halved is known as ?
A. Mitosis
B. Meiotic I
C. Meiotic II
D. Interphase
21 Chromatids of a chromosome are attached at a point called ?
A. Centriole
B. Telomere
C. Centromere
D. Centrosome
22 The chromosomes get aligned at the equator during ?
A. Prophase
B. Anaphase
C. Metaphase
D. Telophase
23 The formation of Chiasma is seen during ?
A. Diplotene
B. Pachytene
C. Zygotene
D. Leptotene
24 A single cell gives rise to 32 cells by dividing mitotically. How
many times has it undergone mitotic division ?
A. 4
B. 5
C. 8
D. 16
25 The two cells formed during mitosis contain ?
A. Half amount of DNA & same set of chromosomes as those of
parent cell
B. Same amount of DNA & same set of chromosomes as those
of parent
C. Same amount of DNA & different set of chromosomes as
those of parent cell
D. None of the above
