1.
If the linkage
was known at time of Mendel, then which of the following low Mendel was unable
to explain?
a)
Law of dominance b) Law of independent assortment
c)
Law of segregation d)
Law of purity of gametes
2.
When chromosome
sets are present in multiple of ‘n’ the condition is called
a) polyploidy b) aneuploidy c) Euploidy d) Diploidy
3.
Transformation
experiments using pneumoccocus bacteria led to the hypothesis that
a)
RNA is the
transfer link between DNA and protein synthesis
b)
Chromosomes are
made up of DNA
c)
DNA
is genetic substance
d)
Bacteria has
sexual reproduction
4.
The type of RNA
specifically responsible for directing the proper sequence of amino acids in
protein sythesis is
a) Ribosomal RNA b) messenger RNA c)
chromosomal RNA d) None
5.
Through which
enzyme can RNA give rise to DNA
a) Restriction enzyme b)
DNA polymerase
c) RNA polymerase d) Reverse ranscriptase
6.
Study of
improvement of human race by providing ideal ‘nature’ is called
a) eugenics
b) euphenics c) euthenics d) genetics
e) None of these
7.
If a haemophilic
man marries a woman carrier for haemophilia, what would be the possibility that
their daughter would be haemophilic?
a) 100% b)
75% c) 50% d)
0% e) None of these
8.
Normally all
genes occur in pairs occupying position on the X chromosome and not in Y
chromosome. This indicates that
a)
X chromosome is
large than ‘X’ chromosome
b)
Entire
set gene on X is different from those on Y chromosome
c)
X chromosome is
larger Y chromosome
d)
X chromosome is
dominating with Y chromosome
e)
None of these
9.
In human beings
sex is determined
a)
Before
fertilization sex is determined
b)
During 6th
week of foetal life when androgen are produced
c)
At
the time of fertilization of ovum
d)
During 7th
and 8th week of foetal life when gonads differentiates into testis
and ovary
e)
None of these
10.
Genetic
engineering means
a) manipulation of genes
b) manipulation of cell contents
c) manipulation of maculaadherens d) formation of test tube baby
e) None
11.
A haploid set of
all the genes present in a gamete is called
a) genotype b) phenotype c) genone d) Linkage group
e) None
12.
HbA
and HbS alleles of normal and Sickle celled RBC are
a) Dominant-recessive
alleles b) Polygenic alleles c)
Codominant alleles
d) Multiple alleles e)
None
13.
RNA polymerase
which is on the promoter, moves to the structural genes to transcribe them.
However it happens when
a) there is no repressor
on the operator b) there
is repressor on the operator
c)
Inducer binds to structural genes d)
RNA polymerase shifts first to regulator gene
e)
Regular gene induces promoter
14.
Haploid
chromosome number is 10. What is number in a monosomic
a) 19 b) 18 c)
20 d) 22 e) 11
15.
Which chromosomes
is found in male Grasshopper
a) XY b) X c) XO d) XY e) XX
16.
Colchicine
inhibits
a) Meetaphase b)
Anaphae c) Interphase d) Spindle formation
e) Any of these
17.
How many types of
gametes you expect from the genotype Aa Bb
a) 4 b) 8 c) 16 d) 32 e) 64
18.
‘Gametes are
never hybrid’. It is a statement of law of
a) dominance b)
segregation c) independent assortment
d)
random fertilization e) none of the
above
19.
Certain genetic
elements that regularly ‘jump’ to new locations, often inactivating the gene
into which they become inserted, are called
a) Heterochromatin b)
Episomes c)
Overlapping genes
d)
Transposons e) Cistron
20.
Point mutation is
a change which involves
a) loss of a gene b) addition of a gene
c)
change in a base of a gene
d) deletion of a segment of gene
e) all of these
21.
In split genes,
the coding sequences are called
a) Cistrons b) Opeerons c) Exons
d) Introns e) None
22.
Starting and stopping
codons are respectively;
a)
UCA and UAA b) AUG and UGA c)
GUA and AAA
d)
GUG and AUG e) UUU and AUU
23.
Anticodon is
found in;
a)
mRNA b) rRNA c) DNA d)
tRNA e) cDNA
24.
Plasmids are suitable
vectors for genetic cloning as;
a)
They are
indispensable
b)
They
are self replicating units
c)
They are
essential for bacterial reproduction
d)
They are
essential for bacterial nutrition
e)
They are cheaply
available
25.
A piece of
nucleic acid used to find a gene by forming a hybrid with it is called:
a)
vector b)
probe c) retrovirus d)
restriction sequence e) non of these
26.
A set of
bacterial clones, each containing a plasmid or phage is called;
a)
gene pool b) genome
c)
gene library d)
genophore e)
codone
27.
ABO blood
grouping in humans is an example of
a) Polygenic inheritance b) Pleiotropic
gene c) Complementary gene
d) Multifactor inheritance e) Multiple alleles
28.
A mixture of heat
killed NL-cells (dead cells) and live L-cells injected into mic NL-type cells
are pathogenic, develop a disease and kill the animals, on the other hand
L-type cells are non pathogenic. The expected result could be
a) Mice develop disease
and die
b) Mice die without developing disease
c) Mice do not develop disease and also do not die
d) 50% mice develop disease and die
e) All mice remain healthy but loose vision
29.
Genes do not
occur in pair in
a) Zygote b)
Somatic cell c) Endosperm cells d) Gametes e)
None
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