Haemophilic carrier female marries a normal man. In her progeny... ...
10%
a) All daughter will have haemophilia
30%
b) All sons will have haemophilia
30%
c) 50% daughters will have haemophilia
30%
d) 50% sons will have haemophilia
Q.2.
Blackening of exposed urine in a metabolic disorder due to ... .. [ kerala 2005 ]
30%
a) Phenylalanine
0%
b) Tyrosine
60%
c) Homogentisic acid
10%
d) Valine replacing glutamic acid
Q.3.
XY sex chromosomes were discovered by ... ... [ BHU 1994 ]
0%
a) Gregor Johann Mendel
75%
b) M.J.D. White
25%
c) Nettie Stevens
0%
d) Robert Brown
Q.4.
Barr body is associated with .... ... [ BHU 2002 ]
0%
a) Autosome
80%
b) X-chromosome
0%
c) Y-chromosome
20%
d) Male sex only
Q.5.
Twenty third pair of human chromosomes are known as .... ... [ MPPMT 2002 ]
40%
a) Autosomes
40%
b) Heterosomes
0%
c) Chromatids
20%
d) Chromosomes
Q.6.
A haemophilic man marries a carrier woman. Their children will be ... ... [ Pb PMT 1999 ]
40%
a) All children haemophiliac
0%
b) One fourth children haemophiliac
60%
c) Half children haemophiliac
0%
d) One tenth children haemophiliac
Q.7.
When a certain character is inherited only through female parent, it probably represents .... ... [ AFMC 2008]
20%
a) Multiple plastid inheritance
60%
b) Cytoplasmic inheritance
20%
c) Incomplete dominance
0%
d) Mendelian nuclear inheritance
Q.8.
What type of sex determination is found in Grasshopper ... ... [CPMT 2010 ]
0%
a) XX - XY
20%
b) ZW - ZZ
20%
c) ZZ - ZY
60%
d) XX - XO
Q.9.
Chromosomes conned with sex determination are ... ... [ CPMT 1995 ]
0%
a) Autosomes
75%
b) Heterosomes
25%
c) Oxysomes
0%
d) B-chromosomes
Q.10.
A woman with albinic father marries albinic man. The proportion of her progeny is .... [ RPMT 2011 ]
0%
a) All normal
20%
b) All albinic
20%
c) 2 normal : 1 albinic
60%
d) 1 normal : 1 albinic
Q.11.
A colour blind male (XcY) marries a carrier female (CCXc. possible genotype of daughter will be .... ...
0%
a) XcXc only
33%
b) XCXC
33%
c) XCXC and XcXc
33%
d) XCXc and XcXc
Q.12.
Lyon's hypothesis is connected with ... .. [ Har PMT 2000 ]
50%
a) Number of barr bodies
0%
b) Genetic compatibility
50%
c) Genetic incompatibility
0%
d) Centromeres position
Q.13.
Number of linkage group is Pisum Sativum is ... ... [ DPMT 2003 ]
67%
a) 4
0%
b) 5
33%
c) 7
0%
d) 10
Q.14.
Presence of recessive trait is 16%. The frequency of dominant allele in population is ... ... [ DPMT 2001 ]
67%
a) 0.6
0%
b) 0.32
33%
c) 0.84
0%
d) 0.92
Q.15.
Chromatid is .....
33%
a) One half of chromosome
67%
b) haploid chromosome
0%
c) complete chromosome
0%
d) duplicate chromosome
Q.16.
In Down's syndrome of male child, the sex complement is [ CBSE 1990 ]
33%
a) XO
67%
b) XY
0%
c) XX
0%
d) XXY
Q.17.
Down's syndrome/ mongolism is due to .... .. [ DPMT 2001 ]
33%
a) Extra sex chromosome
67%
b) Extra 21st chromosome
0%
c) Extra Y-chromosome
0%
d) Deficient sex chromosome
Q.18.
More than 200 chromosomes occur in ... ....
25%
a) Chicken
50%
b) Dog
25%
c) Amoeba
0%
d) Gorilla
Q.19.
Recessive mutations are expressed in ... ... [ MPPMT 19991 ]
67%
a) Homozygous condition
33%
b) Heterozygous condition
0%
c) Next generation
0%
d) Same generation
Q.20.
A colour blind man (XCY) has a colour blind sister (XCXC) and a normal brother (XY). What is genotype of father and mother .... ... [ DPMT 1996 ]
33%
a) XCY, XCXC
67%
b) XCY, XCX
0%
c) XY, XCXC
0%
d) XY, XC
Q.21.
A harmful condition which is also a potential savior from a mosquito born infectious disease ... .. [ CBSE 2003 ]
0%
a) Thalassemia
0%
b) Sickle cell anaemia
50%
c) Leukemia
50%
d) Pernicious anaemia
Q.22.
Number of Barr bodies in XXXX female would be .... .... [ CBSE 2001 ]
50%
a) 4
0%
b) 3
0%
c) 2
50%
d) 1
Q.23.
In Drosophila XXY is female. In humans it represents an abnormal male because .... [ AIIMS 2007 ]
100%
a) Y-chromosome induces male traits in humans
0%
b) Y-chromosomes is essential for female sex in Drosophila
0%
c) Y-chromosome is not essential for male sex in humans
0%
d) none of the above
Q.24.
Which clotting factor is absent in haemophilia A ? [ W.B. 2008]
50%
a) VII
0%
b) VIII
50%
c) IX
0%
d) X
Q.25.
Women rarely experience sex-linked defects because they must be ... ... [ MPPMT 1990 ]
50%
a) Homozygous
50%
b) Carrier
0%
c) Heterozygous
0%
d) Develop immunity
Q.26.
A woman with 47 chromosmes due to presence of additinoal 21 chromosome is characterized by ... ... [ CBSE 2005 ]
50%
a) Super femaleness
0%
b) Turner's syndrome
50%
c) Down's syndrome
0%
d) Triploidy
Q.27.
Cytoplasmic male sterility is passed down ... ... [ AMU 1997]
0%
a) Through bacteriophage
0%
b) Paternally
100%
c) Maternally
0%
d) Biparental
Q.28.
Mutation is .... ...
50%
a) A change in phenotype of an organism caused by some environmental factor
50%
b) An inheritable change in genetic material
0%
c) A temporary change in structure of the nucleus
0%
d) Any one of the above
Q.29.
Alleles of different genes found on same chromosome may separate due to ... ... [ MPPMT 1993 ]
0%
a) Epistasis
50%
b) Crossing over
50%
c) Continuous variations
0%
d) Pleiotropy
Q.30.
turner's syndrome is due to ... ... [ Har PMT 2000 ]
50%
a) trisomy of chromosome 21
0%
b) trisomy of chromosome 18
0%
c) autosomal recessive gene
50%
d) absence of one sex chromosome
Q.31.
Which one is a hereditary disease/ mandolin disorder? ... . [ CBSE 1990 ]
0%
a) Cataract
0%
b) Leprosy
0%
c) Blindness
100%
d) Phenylketonuria
Q.32.
Percentage of recombination between A and B 9%, A and C 17% and B and C is 26%. The arrangement of genes would be .... ... [ Odisha 2004 ]
50%
a) A - B - C
0%
b) A - C- B
0%
c) B - C - A
50%
d) B - A - C
Q.33.
Both sickle cell anaemia and Huntington's chorea are ... ... [ AFMC 2008 ]
0%
a) Virus related diseases
50%
b) Bacteria related diseases
50%
c) Congenital disorders
0%
d) Pollution induced disorders
Q.34.
According to genetic balance theory, X/A = 1.5 will make the individual .... [BHU 2008]
100%
a) male
0%
b) Meta or super female
0%
c) Intersex
0%
d) None of the above
Q.35.
in human sperm, besides autosomes the chromosome complement contains .... .. [ KCET 1999 ]
50%
a) X and Y
0%
b) Either X or Y
50%
c) Y only
0%
d) X only
Q.36.
XX-XO sex chromosome complement occurs in .. ...
50%
a) Cockroach
50%
b) Honey bee
0%
c) Human being
0%
d) Chimpanzee
Q.37.
Who studied sex-linked inheritance for first time .... ... [ MPPMT 1993 ]
0%
a) Morgan
50%
b) Khorana
50%
c) Pasteur
0%
d) Von Helmont
Q.38.
Haemophilia is due to mutation in ... ... [ CPMT 2001 ]
0%
a) X and Y chromosomes
0%
b) Y-chromosome
33%
c) X-chromosome
67%
d) Autosomal chromosome
Q.39.
The major/ ultimate source of variations are .... .. [ CPMT 1991 ]
0%
a) Polyploidy
100%
b) Mutations
0%
c) Chromosome aberrations
0%
d) Segregation
Q.40.
Pairs of homologous chromosomes present in humans is .... .... [ Odisha 2008 ]
50%
a) 46
0%
b) 44
50%
c) 23
0%
d) 22
Q.41.
The technique employed in human genetic counseling is .... ... [ kerala 2005 ]
50%
a) Serological technique
0%
b) Polyploidy
50%
c) Pedigree analysis
0%
d) Genetic engineering
Q.42.
Who used frequency of recombination between gene pairs on the schromosome
100%
a) Alfred Sturtevant
0%
b) Gregor Mendel
0%
c) Correns
0%
d) Tschemark
Q.43.
Girl of normal vision whose father was colour blind marries a man of normal vision whose father was also colour blind. The sons of this marriage would be ... ...[AIIMS 2008 ]
50%
a) All normal
0%
b) All colour blind
50%
c) 50% colour blind
0%
d) 25% colour blind
Q.44.
Gene located on mitochondrial DNA bring about ... ... [ HarPMT 2000 ]
50%
a) Paternal inheritance
50%
b) Maternal inheritance
0%
c) Biparental inheritance
0%
d) There is no inheritance
Q.45.
XXY person suffers from ... .. [ AFMC 2011]
50%
a) Down's syndrome
50%
b) Klinefelter's syndrome
0%
c) AIDS
0%
d) Turner's syndrome
Q.46.
A disease sometimes found in persons above 40 which is characterized by poor CNS coordination, forgetfulness and tremor of hands is ... ... [ Manipal 2001 ]
50%
a) Epilepsy
50%
b) Alzheimer's disease
0%
c) Migraine
0%
d) Schizophrenia
Q.47.
Which one of the following carries extra nuclear genetic material? .... .. [ AIIMS 2001 ]
50%
a) Golgi apparatus
0%
b) Ribosomes
0%
c) Chromosome
50%
d) Plastids / Mitochondria
Q.48.
Phenylketonuria is genetic disorder caused by a defect in metabolism of .... [ kerala 2004 ]
50%
a) Fatty acids
0%
b) Polysaccharides
50%
c) Amino acids
0%
d) Vitamins
Q.49.
In Neurospora, 8 ascospores are formed instead ofthis indicates.. .... [ BHU 1993]
50%
a) One meiosis
0%
b) Two meiosis
0%
c) Two mitosis
50%
d) Meiosis followed by mitosis
Q.50.
DNA is associated with basic protein .... ... [ BHU 1998 ]
0%
a) Albumin
50%
b) Nonhistone
50%
c) Histone
0%
d) Both A and C
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