Q.1.
Mutations that develop suddenly in nature are .... ... [ HPPMT 2007 ]
-
41%
a) Spontaneous
-
10%
b) Induced
-
40%
c) Gene mutations
-
9%
d) Chromosomal mutation
Q.2.
Where are Barr bodies found .... .. [ AFMCE 2010]
-
20%
a) Ova
-
14%
b) Sperms
-
32%
c) Somatic cells of man
-
35%
d) Somatic cells of woman
Q.3.
Seedless watermelons have been obtained through ... .... [ CPMT 2001 ]
-
49%
a) Vegetative propagation
-
9%
b) Haploidy
-
20%
c) Triploidy
-
21%
d) Gibberellin application
Q.4.
In a pedigree analysis ȷ = 0 reprents ... ... [ kerala 2008 ]
-
35%
a) Consanguineous mating
-
23%
b) Affected parents
-
16%
c) Siblings
-
27%
d) Unrelated mating
Q.5.
AS per latest information human genome has ... ... [ Uttarakhand 2001 ]
-
40%
a) 3,00,000 gene
-
52%
b) 30, 000 gene
-
6%
c) 3,000 gene
-
3%
d) 300 gene
Q.6.
Amino acid substituted in sickle cell anaemia is ... ... [ kerala 2004 ]
-
21%
a) Glutamic acid for valine in alpha chain
-
41%
b) Glutamic acid for valine is beta chain
-
16%
c) Valine for glutamic acid in alpha chain
-
22%
d) Valine for glutamic acid in beta chain
Q.7.
Complete haploid set of chromosomes of a species is .... .. [ CPMT 210]
-
39%
a) Genome
-
22%
b) Genotype
-
10%
c) Genetic code
-
29%
d) Allele
Q.8.
Recessive mutation is not expressed in ... ... [ DPMT 1996 ]
-
20%
a) Homozygous male
-
29%
b) Heterozygous male
-
35%
c) Heterozygous female
-
16%
d) Homozygous female
Q.9.
Down's syndrome is due to .... ... [ MPPMT 1997 ]
-
38%
a) Autosome
-
28%
b) Sex chromosome
-
25%
c) Sex-linked disease
-
9%
d) Duplication
Q.10.
Morgan proposed that genetic exchange of recombination occurs in the region of .... [ HPPMT 2007 ]
-
33%
a) Chiasmata
-
43%
b) Linkage
-
20%
c) Centromere
-
4%
d) Telomere
Q.11.
Out of A-T, G-C pairing, bases of DNA may exist in alternate valiancy state owing to arrangement called .... ... [ CBSE 1994 ]
-
23%
a) Analogue substitution
-
26%
b) Tautomerisational mutation
-
31%
c) Frame-shift mutation
-
20%
d) Point mutation
Q.12.
One of the following is holandric inheritance ...... .. [ EAMCET 2002 ]
-
26%
a) Haemophilia
-
23%
b) Epidermolysis
-
34%
c) Webbed toes
-
17%
d) Turner's syndrome
Q.13.
Primary source of allelic variation is ... ... [ AIIMS 2005 ]
-
24%
a) Independent assortment
-
27%
b) Recombination
-
34%
c) Mutation
-
15%
d) Polyploidy
Q.14.
In heredity the genes are obtained from .... ... [ Bih PMT 1996]
-
12%
a) Father
-
7%
b) Mother
-
77%
c) Both
-
4%
d) None of the above
Q.15.
One of the following is a random process... ... [ AMU 2000 ]
-
22%
a) Variations
-
22%
b) Adaptations
-
20%
c) Evolution
-
36%
d) Mutations
Q.16.
Number of linkage group in Escherichia coil is .... ... [ DPMT 2007 ]
-
29%
a) 1
-
40%
b) 2
-
23%
c) 4
-
8%
d) 5
Q.17.
A child gets sex-linked traits from ... ... [ Bih PMT 1994 ]
-
30%
a) Father
-
10%
b) Mother
-
57%
c) Both father and mother
-
3%
d) None of the above
Q.18.
Which of the following discoveries resulted in Nobel Prize .... ... [ CBSE 2003 ]
-
27%
a) Recombination of linked genes
-
38%
b) X-rays induce sex-linked recessive lethal mutations
-
30%
c) Genetic Engineering
-
4%
d) Cytoplasmic inheritance
Q.19.
X-rays cause mutation by .... .. [ BHU 2001 ]
-
15%
a) transition
-
30%
b) transversion
-
38%
c) deletion
-
17%
d) base substitution
Q.20.
Shape of chromosomes is determined by position of ... ... [ CPMT 2001 ]
-
24%
a) Centrosome
-
66%
b) Centromere
-
6%
c) Telomere
-
4%
d) Micromere
Q.21.
Which one is triploid ... .. [ BHU 1996 ]
-
16%
a) Mango
-
26%
b) Wheat
-
30%
c) Orange
-
28%
d) Banana
Q.22.
Sex-linked characters have a district feature of ... ... [ BHU 2006 ]
-
25%
a) Occurrence on X-chromosome
-
26%
b) Occurrence on Y-chromosome
-
10%
c) Non crises-cross inheritance
-
38%
d) Criss-cross inheritance
Q.23.
The condition of an extra chromosome in addition to its homologous pair is ... .. [ KCET 2005 ]
-
57%
a) Trisomy
-
20%
b) Monosomy
-
19%
c) Polyploidy
-
5%
d) Nullisomy
Q.24.
In cystic fibrosis there is ... ....
-
17%
a) Failure of chloride ion transport
-
13%
b) Mucous clogging of lungs
-
15%
c) Defective functioning
-
55%
d) All the above
Q.25.
Linkage in plants was first shown in ... .. [ MPPMT 2000 ]
-
18%
a) Zea mays
-
8%
b) lathyrus odoratus
-
24%
c) Oenothera lamarckiana
-
50%
d) Pisum sativum
Q.26.
Larva of Bonellia settling near proboscis of adult female develops into male due to ... ... [ MPPMT 1995 ]
-
66%
a) Substances secreted by proboscis
-
8%
b) Electrolysis in water
-
20%
c) Oxygen in environment
-
6%
d) Carbon dioxide in environment
Q.27.
The phenomenon of exchange of segments between nonsister chromatids/ paternal and maternal chromosomes is called .... .. [ DPMT 2010]
-
21%
a) Linkage
-
21%
b) Recombination
-
38%
c) Crossing over
-
19%
d) Segregation
Q.28.
Which one id de novo mutation? [ AMU 1997 ]
-
6%
a) TT × TT → TT
-
30%
b) tt × tt → Tt
-
30%
c) Tt × tt → Tt
-
34%
d) Tt × Tt → TT, Tt, tt
Q.29.
Genes present in the cytoplasm of eukaryotic cells are found in .... ... [ AIIMS 2006 ]
-
64%
a) Mitochondria and inherited via egg cytoplasm
-
9%
b) Lysosomes and peroxisomes
-
13%
c) Golgi bodies and SER
-
14%
d) Plastids and inherited via male gametes
Q.30.
haploid chromosome number of body cells is ... ... [ manipal 2005 ]
-
5%
a) 21
-
15%
b) 22
-
69%
c) 23
-
11%
d) 46
Q.31.
Mustard gas was used as a chemical mutagen for the first time by .... .. [ AMU 2003 ]
-
30%
a) Muller
-
20%
b) Alter Berg
-
43%
c) Auerbach and Robinson
-
7%
d) Stadler
Q.32.
A recessive mutation is .... .. [ Odisha 2004 ]
-
11%
a) Not expressed
-
21%
b) Rarely expressed
-
49%
c) Expressed only in homozygous and hemizygous states
-
19%
d) Expressed only in hetrozygous state
Q.33.
What map unit (Centimorgan) is adopted in the construction of genetic maps? [NEET 2019]
-
15%
a) A unit of distance between two expressed genes representing 10% cross over.
-
18%
b) A unit of distance between two expressed genes representing 100% cross over.
-
42%
c) A unit of distance between genes on chromosomes, representing 1% cross over.
-
25%
d) A unit of distance between genes on chromosomes, representing 50% cross over.
Q.34.
The frequency of recombination between gene pairs on the same chromosome as a measure of the distance between genes was explained by : [ NEET 2019]
-
36%
a) T.H. Morgan
-
25%
b) Gregor J. Mendel
-
22%
c) Alfred Sturtevant
-
17%
d) Sutton Boveri
Q.35.
Which of the following pairs is wrongly matched ? [NEET 2018]
-
17%
a) XO type sex : Grasshopper determination
-
24%
b) ABO blood grouping : Co-dominance
-
35%
c) Starch synthesis in pea : Multiple alleles
-
24%
d) T.H. Morgan : Linkage
Q.36.
Select the correct statement : [NEET 2018]
-
21%
a) Spliceosomes take part in translation.
-
35%
b) Punnett square was developed by a British scientist.
-
31%
c) Franklin Stahl coined the term ‘‘linkage’’.
-
13%
d) Transduction was discovered by S. Altman.
Q.37.
A woman has an X-linked condition on one of her X chromosomes. This chromosome can be inherited by [NEET 2018]
-
14%
a) Only grandchildren
-
22%
b) Only sons
-
12%
c) Only daughters
-
52%
d) Both sons and daughters
Q.38.
Select the incorrect match : [NEET 2018]
-
25%
a) Submetacentric chromosomes – L-shaped chromososmes
-
23%
b) Allosomes – Sex chromosomes
-
32%
c) Lampbrush chromosomes – Diplotene bivalents
-
21%
d) Polytene chromosomes – Oocytes of amphibians
Q.39.
Carrier female marries a normal vision male. How many daughters would be colour blind carriers? [ Wardha 2011]
-
38%
a) Zero
-
25%
b) 25%
-
34%
c) 50%
-
3%
d) 100%
Q.40.
Chromosome aberration occurs due to ... ... [ CPMT 1998 ]
-
22%
a) Aneuploidy
-
15%
b) Polyploidy
-
17%
c) Physical effects
-
47%
d) All the above
Q.41.
An octamer of four histones complex with DNA is called ... ... [ AMU 2002 ]
-
9%
a) Endosome
-
68%
b) Nucleosome
-
9%
c) Raff
-
14%
d) Nucleotin
Explanation
Q.42.
Distance between two linked genes is measured in map units that depict ... ... [ AIIMS 1998 ]
-
27%
a) ratio of crossing over between them
-
18%
b) cross-over value
-
13%
c) number of genes between them
-
42%
d) both B and C
Q.43.
Select the incorrect statement from the following ... .. [ CBSE 2009 ]
-
31%
a) Baldness is a sex-limited trait
-
20%
b) Linkage is an exception to the principle of independent assortment
-
22%
c) Galactosemia is an inborn error of metabolism
-
27%
d) Small population size results in random genetic drift in a population
Q.44.
Melanuria ( black urine) is caused by abnormal catabolism of .... ... [ pB. PMT 2005]
-
28%
a) Alanine
-
46%
b)Tyrosine
-
17%
c) Proline
-
9%
d) Tryptophan
Q.45.
The male has a mutation in his mitochondria. During segregation, the mutation is found in ... .. [ CBSE 2004]
-
20%
a) None of the progeny
-
23%
b) One third of progeny
-
43%
c) Half of progeny
-
14%
d) Whole of progeny
Q.46.
The term mutation was given by ... .. [ Bihar PMT 2000 ]
-
41%
a) De Vries
-
21%
b) Mendel
-
22%
c) Darwin
-
16%
d) Lamarck
Q.47.
Diethyl sulphate is ... .. [ Wardha 2003 ]
-
23%
a) Insecticide
-
25%
b) Antibiotic
-
44%
c) Mutagen
-
8%
d) Fusogen
Q.48.
Turner's syndrome is ... ... [ AMU 2012 ]
-
16%
a) Case of monosomy
-
25%
b) Cause of sterility in females
-
18%
c) Absence of Barr body
-
42%
d) All the above
Q.49.
male is haploid in . ... [ uttarakhand 2001]
-
12%
a) lizard
-
16%
b) Cockroach
-
66%
c) Honey bee
-
7%
d) Bats
Q.50.
What is correct? [ kerala 2007 ]
-
21%
a) Monosomy and nullisomy are two types of euploidy
-
14%
b) Polyploidy is more common in animals than in plants
-
47%
c) Polyploidy occur due to failure in separation of complete sets of chromosomes
-
19%
d) 2n - 1 is trisomy