Q.1.
Which one is sex-related disease? [ JIPMER 2004 ]
-
17%
a) Christmas disease
-
75%
b) Klinefelter's syndrome
-
8%
c) Phenylketonuria
-
0%
d) Albinism
Q.2.
Which one is inherited disorder? Kerala 2003 ]
-
29%
a) Albinism
-
43%
b) AIDS
-
29%
c) Parkinson's disease
-
0%
d) leprosy
Q.3.
Which is the main category of mutation? [ CBSE 1999 ]
-
38%
a) Genetic mutation
-
0%
b) Zygotic mutation
-
0%
c) Somatic mutation
-
62%
d) All the above
Q.4.
Which one of the following is responsible for mental abnormalities in humans? [ MPPMT 1991]
-
57%
a) XXX and XY
-
0%
b) XX and XXX
-
14%
c) XO and XXXX
-
29%
d) XX and XO
Q.5.
Telomeres with repetitive DNA sequences ... .. [ CBSE 2007 ]
-
40%
a) Act as replicons
-
0%
b) Are transcription initiators
-
20%
c) Help in chromosome pairing
-
40%
d) Prevent chromosome loss
Q.6.
Assertion: Person suffering from haemophilia fail to produce blood clotting factor VIII Reason: Prothrombin producing platelets in such persons are found in very low concentration. .... [ AIIMS 2005 ]
-
50%
a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
-
25%
b) The Assertion and Reason are true but Reason is not correct explanation of Assertion
-
25%
c) Assertion is true but, Reason is false
-
0%
d) Assertion is false but, Reason is true
Q.7.
Which pteridophytes has the maximum chromosome number? .... ... [ JIPMER 1996 ]
-
0%
a) Ophioglossum reticulatum
-
50%
b) Azolla pinnata
-
25%
c) Lycopodium cernuum
-
25%
d) Selaginella apus
Q.8.
Deficiency of VIII factor leads to .... ... [ MPPMT 2007 ]
-
33%
a) Haemophilia A
-
67%
b) Haemophilia B
-
0%
c) Haemophilia C
-
0%
d) Haemophilia D
Q.9.
Cytoplasmic genes enter an individual through ... ... [ manipal 2000 ]
-
33%
a) Centrioles
-
17%
b) Ribosomes
-
50%
c) Golgi apparatus
-
0%
d) Mitochondria
Q.10.
Which one is sex-linked disorder? [ Manipur 2009 ]
-
67%
a) Sickle cell anaemia
-
33%
b) Albinism
-
0%
c) Haemophilia
-
0%
d) Phenylketonuria
Q.11.
The 'Christmas disease' patient lacks antihaemophilic .... ... [ KCET 2003 ]
-
50%
a) Homogentisic acid oxidase
-
0%
b) Factor VIII
-
50%
c) Factor XI
-
0%
d) Factor IX
Q.12.
Which is genetically transmitted trait? ... .. [ kerala 2004 ]
-
0%
a) Haemophilia
-
33%
b) Muscular dystrophy
-
67%
c) Colour blindness
-
0%
d) All the above
Q.13.
Gynandromorphy is .... ... [ CPMT 1996]
-
100%
a) Male with female traits
-
0%
b) Female with male traits
-
0%
c) Half male and half female
-
0%
d) None of the above
Q.14.
Theory proposed by Bridges is ... ... [ MPPMT 1999 ]
-
0%
a) Sex reversal
-
0%
b) Hormonal control of sex
-
50%
c) Genetic balance
-
50%
d) Development of Gynandromorphy
Q.15.
X-chromosome or X-body was first observed by .... ... [ HPPMT 2012 ]
-
0%
a) Mendel (1901)
-
0%
b) Castle ( 1910)
-
100%
c) Henking ( 1891)
-
0%
d) Bateson (1906)
Q.16.
An individual with cd genes was crossed with wild type ++. On test crossing F1, the progeny was +c 105, cd 880 and ++Distance between cd genes is ... ... [ AIIMS 1990]
-
50%
b) 5.5 map units
-
50%
a) 11 map units
-
0%
c) 44 map units
-
0%
d) 88 map units
Q.17.
A woman with normal vision but with colour blind father marries a colour blind man. The fourth child of the couple is a boy. this boy ... ... [ CBSE 2005 ]
-
0%
a) May or may not be colour blind
-
50%
b) Must be colour blind
-
50%
c) Must have normal vision
-
0%
d) Will be partially colour blind due to being heterozygous
Q.18.
An inborn error of metabolism which eventually affects mental development is .... .. [ HPPMT 2001 ]
-
0%
a) Albinism
-
0%
b) Phenylketonuria
-
100%
c) Anaemia
-
0%
d) Bleeder's disease
Q.19.
Gene is formed of ... ... [ BHU 2002]
-
0%
a) Polynucleotide
-
100%
b) Histone
-
0%
c) Hydrocarbons
-
0%
d) Lipoprotein
Q.20.
Which is functional unit of inheritance? [ Har PMT 2005 ]
-
0%
a) Cistron
-
0%
b) Intron
-
50%
c) Chromosome
-
50%
d) Gene
Q.21.
Given below is a highly simplified representation of the human sex chromosomes from a karyotype The genes a and b could be of .... [ AIIMS 2006 ]
-
100%
a) Colour blindness and body height
-
0%
b) Attached earlobe and Rhesus blood group
-
0%
c) Haemophilia and red green colour blindness
-
0%
d) Phenylketonuria and haemophilia
Q.22.
Free Martin is due to .... ... [ MPPMT 1997 ]
-
50%
a) Sex reversal by gene
-
50%
b) Environmental control of sex
-
0%
c) Hormonal control of sex
-
0%
d) Sex determination by chromosome
Q.23.
A normal woman whose father was colour blind marries a colour blind man. What percentage of girls born to these parents would by colour blind .... ... [ JIPMER 2002 ]
-
0%
a) 100%
-
0%
b) 75%
-
100%
c) 50%
-
0%
d) 25%
Q.24.
Bateson used the terms coupling and repulsion for linkage and crossing over. Name the correct parental or coupling type along with its cross over or repulsion.. .... [ CBSE 1990 ]
-
50%
a) Coupling AABB, aabb; Repulsion AABB AAbb
-
50%
b) Coupling AAbb, aaBB; Repulsion Aa Bb, aabb
-
0%
c) Coupling aaBB, aabb; Repulsion AABB, aabb
-
0%
d) Coupling AABB, aabb; Repulsion AAbb, aaBB
Q.25.
In Melandrium , sex determination is of ... ... [ Kerala 2003]
-
100%
a) XX - XO
-
0%
b) ZZ - ZW
-
0%
c) XX - XY
-
0%
d) XX - XO
Q.26.
Non genetic sex determination occurs in ... ... [ WB 2007 ]
-
33%
a) Bonellia
-
33%
b) Cow
-
0%
c) Birds
-
33%
d) Fruit fly
Q.27.
Frequency of Down's syndrome increases when maternal age is ... .. [ Odisha 2004 ]
-
50%
a) Below 35 years
-
50%
b) Above 35 years
-
0%
c) At the time of first pregnancy
-
0%
d) After bearing three children
Q.28.
Genes are located in .... ... [ MPPMT 2012 ]
-
0%
a) Ribosomes
-
0%
b) Sphaerosomes
-
0%
c) Lysosomes
-
100%
d) Chromosomes
Q.29.
A colour blind daughter is born in case of .... .. [ BHU 1999 ]
-
50%
a) Colour blind mother, normal father
-
50%
b) Carrier mother, colour blind father
-
0%
c) Normal mother, colour blind father
-
0%
d) Carrier mother, normal blind father
Q.30.
Mr Kapoor has Bb autosomal gene pair and d allele sex-linked. What shall be proportion of Bb in sperms .... [ CBSE 1993]
-
33%
a) Zero
-
0%
b) 1/2
-
33%
c) 1/4
-
33%
d) 1/8
Q.31.
In Drosophila sex is determined by ... ..[CBSE 2003 ]
-
0%
a) X and Y chromosomes
-
50%
b) Ratio of pair of X-chromosomes to the pair of autosomes
-
50%
c) Ratio of number of X-chromosomes to the sets of autosomes
-
0%
d) Whether the egg is fertilized or develops parthenogenetically
Q.32.
Allosomes are the name of .... ... [ kerala 2001 ]
-
50%
a) Sex chromosomes
-
0%
b) Swellings on the chromosomes
-
50%
c) Chromosomes other than the ones which determine sex
-
0%
d) Nucleolusorganizing regions of chromosomes
Q.33.
As per Lyon's hypothesis, one of the two X-chromosomes undergoes hetero-chromatisation and is called ..... .. [ AMU 2002 ]
-
100%
a) Barr body
-
0%
b) Karyotypic body
-
0%
c) Genotypic body
-
0%
d) phenotypic body
Q.34.
Heterogamesis is .... ...
-
100%
a) Formation of two types of gametes
-
0%
b) Morphological distinction of male and female gametes
-
0%
c) Formation of two types of gametes by one sex and one type by other sex
-
0%
d) Formation of two types of gametes by both the sexes.
Q.35.
Cri-du-chat syndrome in humans is caused by ... ... [ CBSE 2006 ]
-
0%
a) Trisomy of 21st chromosome
-
100%
b) Loss of half of short arm of chromosome 5
-
0%
c) Loss of half of long arm of chromosome 5
-
0%
d) Fertilization of an XX egg by a normal Y-bearing sperm
Q.36.
Assertion: An organism with lethal mutation may not even develop beyond zygote stage Reason: All types of gene mutations are lethal ... ... [ AIIMS 2006 ]
-
0%
a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
-
100%
b) The Assertion and Reason are true but Reason is not correct explanation of Assertion
-
0%
c) Assertion is true but, Reason is false
-
0%
d) Assertion is false but, Reason is true
Q.37.
A single recessive allele which can express its effect should occur on ... ... [ AIIMS 1992 ]
-
0%
a) Any autosome
-
50%
b) Any chromosome
-
50%
c) X-chromosome of female
-
0%
d) X-chromosome of male
Q.38.
Assertion : Phenylketonuria is a recessive hereditary disease caused by failure of the body to oxides an amino acid phenylalanine to tyrosine because of defective enzyme Reason: It results in presence phenylalanine urine .... ... [ AIIMS 2007 ]
-
67%
a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
-
0%
b) The Assertion and Reason are true but Reason is not correct explanation of Assertion
-
33%
c) Assertion is true but, Reason is false
-
0%
d) Assertion is false but, Reason is true
Q.39.
Hypertrichosis ( hairy pinnae) is trait linked to ... .. [
-
50%
a) X - chromosome
-
50%
b) Y - chromosome
-
0%
c) Autosomes
-
0%
d) None of the above
Q.40.
Extra nuclear genes are found in .... ... [ AIIMS 2001 ]
-
0%
a) Plastids, not inherited
-
100%
b) Plasmid, not inherited
-
0%
c) Mitochondria, inherited from male
-
0%
d) Mitochondria, inherited from female
Q.41.
Klinefelter's syndrome has ... ... [ BHU 2006]
-
100%
a) 44 + XXY
-
0%
b) 44 + XO
-
0%
c) 45 + XY
-
0%
d) 66 + XXY
Q.42.
During preparation of gene map, recombination frequencies are additive over short distance but not exactly over long distance due to .... ... [ Har PMT 2001 ]
-
50%
a) Synaptonemal complex
-
50%
b) Inhibitor genes
-
0%
c) Multiple cross overs
-
0%
d) Mutations
Q.43.
Mutations are responsible for ... ... [ MPPMT 1996 ]
-
0%
a) Extinction of organisms
-
100%
b) Variations in population
-
0%
c) Increase in population
-
0%
d) Maintaining genetic continuity
Q.44.
A normal rate of spontaneous mutation is one in every .... ... [ odisha 2004 ]
-
50%
a) 103 - 105
-
50%
b) 105 - 107
-
0%
c) 106 - 109
-
0%
d) 107 - 1010
Q.45.
Frequency of an autosomal recessive lethal gene is 0.Frequency of carrier in a population of 200 individualsis ... .... [ AIIMS 1997 ]
-
100%
a) 72
-
0%
b) 96
-
0%
c) 104
-
0%
d) 36
Q.46.
In the following human pedigree, the filled symbols represent the affected individuals. Identify the type of given pedigree. [ ReAIPMT 2015]
-
100%
a) X-linked dominant
-
0%
b) Autosomal dominant
-
0%
c) X-linked recessive
-
0%
d) Autosomal recessive
Q.47.
Ishihara chart are used by ophthalmologists for detecting .... .. [ BHU 2003 ]
-
0%
a) Eye infection
-
0%
b) Night blindness
-
100%
c) Colour blindness
-
0%
d) Finger prints
Q.48.
Down's syndrome is due to trisomy of 21st chromosome caused by ... ... [ CBSE 1998 ]
-
0%
a) Non disjunction during egg formation
-
0%
b) Non disjunction during sperm formation
-
100%
c) Addition of extra chromosome during mitosis of zygote
-
0%
d) Either A or B
Q.49.
A linkage group is defined as .... ....
-
100%
a) All the linked genes of a chromosomal pair
-
0%
b) Different groups of genes present on different chromosomes
-
0%
c) All the genes located on the same chromosome
-
0%
d) None of the above
Q.50.
Sex chromosomes of a female bird are ... ... [ Kerala 2008 ]
-
0%
a) XO
-
0%
b) ZZ
-
100%
c) ZW
-
0%
d) XX