Q.1.
Which of the following is the most suitable medium for culture of Drosophila melanogaster?
-
0%
a) Cow dung
-
38%
b) Moist bread
-
38%
c) Agar agar
-
25%
d) Ripe Banana
Q.2.
haemophilia is a genetic disorder in which .... ... [ AFMC 1998 ]
-
12%
a) Blood clots in blood vessels
-
62%
b) there is delayed coagulation of blood
-
25%
c) blood fails to coagulate
-
0%
d) blood cell count falls
Q.3.
Hereditary disease in which urine turns black on exposure due to presence of homogentisic acid is .... ... [ BHU 2012 ]
-
17%
a) Ketonuria
-
50%
b) Phenylketonuria
-
0%
c) Haematuria
-
33%
d) Alkaptonuria
Q.4.
Which chromosome set is found in male Grasshopper? [ Bih PMT 1995 ]
-
12%
a) XY
-
50%
b) X
-
12%
c) YY
-
25%
d) XX
Q.5.
Fruit fly Drosophila melanogaster was found to be very suitable for experimental verification of chromosome theory of inheritance by Morgan and his colleagues because .... [ CBSE 2010 ]
-
17%
a) It reproduce parthenogenetically
-
17%
b) Smaller female is easily distinguishable from large male
-
17%
c) A single mating produces two young flies
-
50%
d) It completes life cycle in about two weeks
Q.6.
Barr body occurs in .... ... [ AIIMS 2001 ]
-
50%
a) Inter phase cell of female mammal
-
17%
b) inter phase cell of male mammal
-
17%
c) prophase cell of male mammal
-
17%
d) prophase cell of female mammal
Q.7.
A point mutation is ... ... [ CBSE 1995 ]
-
50%
a) Sickle cell anaemia
-
17%
b) Thalassemia
-
0%
c) Night blindness
-
33%
d) Down's syndrome
Q.8.
If haploid chromosome number is 10, the monosomic number shall be .... .. [ MPPMT 2000]
-
50%
a) 9
-
17%
b) 18
-
0%
c) 10
-
33%
d) 19
Q.9.
In humans, Philadelphia chromosome is formed by reciprocal translocation between chromosomes ... .... [ kerala 2001]
-
17%
a) 9 and 21
-
17%
b) 9 and 22
-
33%
c) 9 and 20
-
33%
d) 20 and 10
Q.10.
Two dominant non allelic genes are 50 map units apart. the linkage is ... ... [ BHU 1997 ]
-
33%
a) Cis type
-
33%
b) Trans type
-
0%
c) Complete
-
33%
d) Absent/ incomplete
Q.11.
Study the pedigree chart, What does it show? [ CBSE 2009 ]
-
17%
a) Inheritance of a condition like phenylketonuria as an autosomal recessive trait
-
33%
b) Inheritance of a recessive sex-linked disease like haemophilia
-
17%
c) Inheritance of sex-linked inborn error of metabolism like phenylketonuria
-
33%
d) pedigree chart is wrong as this is not possible
Q.12.
Which of the following will be colour blind ... .. [ MPPMT 1991 ]
-
17%
a) XY
-
50%
b) XCXC
-
17%
c) XC X
-
17%
d) X X
Q.13.
In 'man' sex linked characters are mainly transmitted through... ... [ MPPMT 2004 ]
-
33%
a) Autosome
-
67%
b) Y-chromosome
-
0%
c) X-chromosome
-
0%
d) All the above
Q.14.
Y-chromosome is .... ...
-
50%
a) Acrocentric
-
50%
b) Telocentric
-
0%
c) Correns
-
0%
d) Bridges
Q.15.
A change in chromosomal number is called ... ... [ MPPMT 1979 ]
-
29%
a) Polyploidy
-
14%
b) Aneuploidy
-
29%
c) Chromosomal mutation
-
29%
d) Somatic mutation
Q.16.
Chromosome theory of inheritance was proposed by .... .. [ RPMT 1996]
-
17%
a) Sutton (1902)
-
0%
b) Boveri (1902)
-
83%
c) Both Sutton(1902) and Boveri (1902)
-
0%
d) Correns ( 1909)
Q.17.
Which has an additional Y-chromosome? ... [ MPPMT 2009 ]
-
14%
a) Turner's syndrome
-
14%
b) Down's syndrome
-
71%
c) Klinefelter's syndrome
-
0%
d) Super female
Q.18.
Smallest segment of genetic material affected by mutation is .... ... [ AFMC 1993 ]
-
17%
a) Recon
-
0%
b) Cistron
-
33%
c) Muton
-
50%
d) Exon
Q.19.
Which of the following is not a Mendelian disorder .... ... [ kerala 2010 ]
-
83%
a) Turner's syndrome
-
0%
b) Thalassemia
-
0%
c) Haemophilia
-
17%
d) Cystic fibrosis
Q.20.
A sex linked trait/disease is ... ..[ AFMC 1996 ]
-
50%
a) Colour blindness/ haemophilia
-
17%
b) Night blindness/ albinism
-
17%
c) Myxoedema/ beri-beri
-
17%
d) Deafness/ tylosis
Q.21.
All the seven children of a couple are males. What is the probability that eight child will also be a male.. ..... [ AMU 2011 ]
-
50%
a) 1/2
-
17%
b) 1/4
-
33%
c) 1/8
-
0%
d) 1/16
Q.22.
Turner's syndrome is due to .... .. [ kerala 2004 ]
-
33%
a) Monosomy
-
0%
b) Disomy
-
67%
c) Trisomy
-
0%
d) Polyploidy
Q.23.
Autosomes present in human sperm are ... .. [ Pb PMT 2000 ]
-
33%
a) 46
-
33%
b) 44
-
0%
c) 23
-
33%
d) 22
Q.24.
Genes for colour blindness in humans are carried by ... .. [ MPPMT 2000 ]
-
33%
a) Mother
-
17%
b) Father
-
33%
c) Both
-
17%
d) Abnormal sex
Q.25.
Phenylketonuria is autosomal recessive disorder of chromosome ... ... [ AMU 2009 ]
-
33%
a) 11
-
0%
b) 12
-
33%
c) 16
-
33%
d) 17
Q.26.
Sickle cell anaemia is a disorder caused due to change in chemical nature of ... ...
-
33%
a) α-chain of haemoglobin
-
50%
b) β-chain of haemoglobin
-
0%
c) Plasma protein
-
17%
d) Both α- and β-chains of haemoglobin
Q.27.
In case of incomplete linkage, the parental combination appears in ... ... [ Odisha 2012 ]
-
17%
a) 100%
-
33%
b) More than 50%
-
33%
c) 25%
-
17%
d) Less than 25%
Q.28.
haploids are preferred over diploids for mutation studies because in haploids ... .. [ CBSE 1993]
-
33%
a) Recessive mutations express immediately
-
67%
b) Dominant mutations express immediately
-
0%
c) Mutations are readily induced
-
0%
d) Tissue culture is easy
Q.29.
Chromosomes are made of ... ... [ MPPMT 2001 ]
-
17%
a) DNA + Pectin
-
0%
b) RNA + DNA
-
83%
c) DNA + Histones
-
0%
d) DNA only
Q.30.
The gene that controls the rate of mutation of another gene is.... ... [ Pb PMT 2000 ]
-
50%
a) Regulator gene
-
17%
b) Inducer gene
-
33%
c) Mutable gene
-
0%
d) Mutator gene
Q.31.
Which is incorrectly paired? ... .. [ kerala 2005 ]
-
33%
a) sry gene --- X chromosome
-
17%
b) 2n-2 --- Nullisome
-
33%
c) Nucleoid --- prokaryote
-
17%
d) Polytene chromosome --- Drosophila
Q.32.
point mutation may occur due to ... ... [ AMU 2009 ]
-
17%
a) Gain of segment of DNA
-
0%
b) Deletion of segment of DNA
-
33%
c) Alternation in DNA sequence
-
50%
d) Change in a single base pair of DNA
Q.33.
In Neurospora both recessive and dominant alleles express their because .....
-
33%
a) The organism contains only one allele for a gene
-
17%
b) Each gene has only one allele
-
17%
c) there are two alleles for each character
-
33%
d) Two genes control each character
Q.34.
Ovum producing Klinefelter's syndrome shall have chromosome number ... .. [ MPPMT 1990 ]
-
33%
a) 21
-
17%
b) 22
-
17%
c) 23
-
33%
d) 24
Q.35.
Euploidy is .... ... [ BHU 1998 ]
-
0%
a) One chromosome more than haploid set
-
17%
b) One chromosome more than diploid set
-
17%
c) One chromosome less than haploid set
-
67%
d) Exact multiple of haploid set of chromosomes
Q.36.
A colour blind man marries a woman with normal vision. the offspring will be .... .. [ AMU 2011 ]
-
17%
a) All sons colour blind
-
0%
b) All daughter colour blind
-
33%
c) Both A and B
-
50%
d) All sons and daughters normal but daughters are carriers
Q.37.
Chromosome complement of Down's syndromes is ... ... [ Manipur 2006 ]
-
17%
a) 2n - 1
-
0%
b) 2n - 1 - 1
-
33%
c) 2n + 1
-
50%
d) 2n + 1 + 1
Q.38.
Gynaecomastia is a symptom of ... ... [ KCET 2004 ]
-
17%
a) Turner's syndrome
-
50%
b) Klinefelter's syndrome
-
33%
c) Downs syndrome
-
0%
d) SARS
Q.39.
Down's syndrome has trisomy of chromosome .... ... [ JKCET 2012 ]
-
17%
a) 20
-
83%
b) 21
-
0%
c) 22
-
0%
d) 23
Q.40.
Which crop is not due to induced mutations ? ... .. [ CBSE 1993 ]
-
17%
a) Reimei of rice
-
67%
b) Prabhat of Arhar
-
17%
c) Sharbati Sonora of Wheat
-
0%
d) Aruna of Castor
Q.41.
Polydactyly in man is due to ... ... [ JKCMEE 2002 ]
-
33%
a) Autosomal recessive allele
-
33%
b) Autosomal dominant allele
-
0%
c) Sex linked receive allele
-
33%
d) Sex linked dominant allele
Q.42.
Mutations are commonly .... .. [ AMU 2005 ]
-
0%
a) Dominant
-
67%
b) Co dominant
-
17%
c) Recessive
-
17%
d) Incomplete
Q.43.
After crossing two plants, the progeny was found to be male sterile due to maternal inheritance. The gene for male sterility resides in ... ... [ CBSE 1997 ]
-
17%
a) Nucleus
-
17%
b) Chloroplasts
-
17%
c) Cytoplasm
-
50%
d) Mitochondria
Q.44.
Genetic maps of chromosomes are based on the frequency of .... ... [ kerala 2006]
-
50%
a) Non disjunction
-
0%
b) Translocation
-
17%
c) Dominance
-
33%
d) Genetic recombination
Q.45.
Which genotype will indicate colour blindness in male .... ... [ Bih PMT 1996]
-
33%
a) XCY
-
17%
b) XCYC
-
33%
c) XCXC
-
17%
d) ACAC
Q.46.
Albinism is a result of inability of the system to convert amino acid ... ... [ Manipal 2004 ]
-
33%
a) Alanine
-
33%
b) Tryptophan
-
0%
c) Lysine
-
33%
d) Phenylalanine
Q.47.
Which is not an X-linked recessive disease? [ AMU 2005 ]
-
33%
a) β-Thalassemia
-
17%
b) Haemophilia
-
0%
c) Colour blindness
-
50%
d) Glucose 6-phosphate dehydrogenase deficiency.
Q.48.
greater is the distance between the two genes on a chromosome .... ..
-
50%
a) greater is the linkage strength
-
17%
b) lesser is the linkage strength
-
33%
c) there is no relationship between the two
-
0%
d) linkage strength remains unchanged
Q.49.
Down's syndrome is due to ... .. [ CBSE 1992 ]
-
0%
a) Crossing over
-
17%
b) Linkage
-
50%
c) Sex-linked inheritance
-
33%
d) Non disjunction of chromosomes
Q.50.
if there is complete linkage in F2 generation .... ... [AIIMS 1999]
-
50%
a) Parental types and recombinants appear in equal ratio
-
0%
b) Recombinants are less than parental types
-
0%
c) Recombinants are more than parental types
-
50%
d) There will be only parental type