D Sex-linked genes were discovered by .... ... [ Wardha 2001 ]
25%
a) Johanssen
50%
b) Mendel
25%
c) Morgan
0%
d) Muller
Q.2.
male child with blood group AB is colour blind. His parents could be .. .... [ EAMCET 2002 ]
75%
a) Father normal vision with blood group A, mother colour blind with group O
0%
b) Father colour blind with group O, mother colour blind with blood group AB
25%
c) Father normal vision with blood group A, mother colour blind with blood group B
0%
d) Father colour blind with blood group O, mother normal vision with blood group O
Q.3.
Down's syndrome is due to non disjunction of ... ... [ Odisha 2006]
75%
a) X-chromosome
0%
b) Y-chromosome
25%
c) Autosome
0%
d) Second chromosome of Drosophila
Q.4.
In Drosophila , during organ differentiation one organ can be replaced by another like wings by legs. Genes responsible for it are ... ... [ CBSE 2000 ]
33%
a) plastid genes
33%
b) Homeotic genes
33%
c) Complementary genes
0%
d) Supplementary genes
Q.5.
Which is not considered regular mitogen ... .... [ Odisha 2011 ]
67%
a) UV radiation
33%
b) Nuclear radiation
0%
c) 2-aminopurine
0%
d) Low temperature
Q.6.
A diploid cell is treated with colchicine. it becomes... ... [ CBSE 2002 ]
33%
a) Diploid
33%
b) Monoploid
33%
c) Triploid
0%
d) Tetraploid
Q.7.
A person with chromosome complement of XXX is .... ... [ Odisha 2008 ]
Of a normal couple, half the sons are haemophiliac while half the daughters are carriers. The gen is located on ... ... [ CBSE 1993 ]
100%
a) X-chromosome of father
0%
b) Y-chromosome of father
0%
c) One X-chromosome of mother
0%
d) Both the X-chromosomes of mother
Q.10.
A sudden spontaneous change in structure and action of gene is called ... ... [ MPPMT 2004 ]
50%
a) Variation
0%
b) Allelomorph
0%
c) Linkage
50%
d) Mutation
Q.11.
Edward's syndrome characterized by mental deficiency is caused by trisomy of chromosome ..... [ MPPMT 2002]
50%
a) 5
0%
b) 9
0%
c) 15
50%
d) 18
Q.12.
Hereditary material present outside nucleus is known as ... ... [ Manipur 2009 ]
50%
a) Genome
0%
b) Plasmon
50%
c) Proteome
0%
d) Cytol
Q.13.
Chromosome number of Down's syndrome/ mongolism is ... .. [ AFMC 2005 ]
0%
a) 46
100%
b) 47
0%
c) 45
0%
d) 23
Q.14.
Even harmful mutation do not get eliminated from gene pool due to ... ... [ Har PMT 2000 ]
0%
a) genetic drift
50%
b) higher frequency due to dominant nature
50%
c) being recessive and persisting in heterozygous condition
0%
d) survival value
Q.15.
Genetic balance of sex determination was proposed by .... ... [ MPPMT 2002 ]
0%
a) Bridges
50%
b) Mendel
0%
c) Balbiani
50%
d) Morgan
Q.16.
Which is correct .... ... [ AIIMS 2011]
50%
a) Birds have ZZ(female) - ZW(male) sex determination
0%
b) Drosophila has XX-XY sex determination
0%
c) Henking discovered Y-chromosome
50%
d) Grasshoppers show X-XY sex determination
Q.17.
A normal green male Maize is crossed with albino female. The progeny is albino because .... .. [ Har PMT 2000 ]
0%
a) trait for albinism is dominant
100%
b) The albinos have biochemical to destroy plastids derived from green male
0%
c) Plastids are inherited from female parent
0%
d) Green plastids of male must have mutated
Q.18.
Which one is correctly matched? .... . [ CBSE 2008 ]
50%
a) Erythroblastosis syndrome --- X-linked
0%
b) Down's syndrome --- 44A+XO
50%
c) Klinefelter's syndrome --- 44 + XXY
0%
d) Colour blindness --- Y-linked
Q.19.
Mutation are induced mostly by ... ... [ CBSE 2005]
50%
a) UV radiations
0%
b) Beta rays
0%
c) Alpha rays
50%
d) Gamma rays
Q.20.
How many genomes are present in a typical green plant cell? .... ... [ CBSE 1998 ]
50%
a) Ten
50%
b) Two
0%
c) Five
0%
d) Three
Q.21.
Monosomic and trisomic conditions are .... ... [ DPMT 2003 ]
100%
a) 2n-1, 2n+1
0%
b) 2n-1, 2n-2
0%
c) 2n+1, 2n + 3
0%
d) n , n+
Q.22.
Crossing over results in . ... [ JKCMEE 2003 ]
100%
a) Recombination between linked genes
0%
b) linkages between genes
0%
c) Segregation of gene
0%
d) Dominance of genes
Q.23.
Haemophilic man marries a normal homozygous female. The probability of their child being haemophilic is ... ... [ Har PMT 2005 ]
50%
a) 0.00%
0%
b) 25%
50%
c) 50%
0%
d) 75%
Q.24.
Lymnaea shell coiling is due to .... .. [ DPMT 2002 ]
50%
a) Maternal inheritance
50%
b) Cytoplasmic inheritance
0%
c) Extranuclear inheritance
0%
d) All the above
Q.25.
Genome does not include ... .. [MHTCET 2010]
0%
a) Mapping of genes
0%
b) Analysis of genome
100%
c) Development of GM crops
0%
d) Analysis of gene products
Q.26.
Queen Victoria of England was ... ... [ KCET 2000 ]
100%
a) haemophilia carrier
0%
b) Colour blind
0%
c) AIDS patient
0%
d) Deaf
Q.27.
A colour blind man has a colour bind sister but normal brother. the phenotype of parents is .... .. [ CPMT 1993]
50%
a) Normal father and colour blind mother
50%
b) Both parents are normal
0%
c) Both parents are colour blind
0%
d) Father colour blind and mother normal
Q.28.
What causes mutations? .... ... [ CBSE 1996]
0%
a) Colchicine
0%
b) Cosmic rays
100%
c) Gamma rays
0%
d) Crossing over
Q.29.
Which is correct ? [BHU 1990]
50%
a) Multivalent formation occurs allopolyploids
50%
b) Aneuploidy occurs due to chromosome doubling
0%
c) Tetraploid plants may have wider and extensive distribution
0%
d) Raphanobrassica is autopolyploid
Q.30.
The condition of sickle cell anaemia is due to .... .. [CBSE 2006 ]
50%
a) Chromosomal mutation
0%
b) Silent mutation
50%
c) Point mutation
0%
d) Frame-shift mutation
Q.31.
Assertion: A middle aged woman is having small sized breasts and undersized uterus Reason Her genotype shows XO condition of allosomes ..... .... [ AIIMS 2012 ]
100%
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
0%
c) Assertion is true but, Reason is false
0%
d) Assertion is false but, Reason is true
Q.32.
Which one brings about point mutation? [AMU 2002 ]
100%
a) 5-methyl cytosine
0%
b) Guanine
0%
c) Adenine
0%
d) 5-Bromouracil
Q.33.
Out of 8 ascospores formed in Neurospora, the arrangement is 2a:4A:2a showing .... [ CBSE 1992 ]
50%
a) No crossing over
0%
b) some meiosis
50%
c) Second generation division
0%
d) First generation division
Q.34.
Haemophilia is .... ... [ MHTCET 2008 ]
100%
a) Genetic disorder
0%
b) Infectious disease
0%
c) Metabolic disorder
0%
d) Occupational disease
Q.35.
In skip generation inheritance of colour blindness, the trait from a colour blind man is passed on to ..... [ EAMCET 2005]
100%
a) Daughter
0%
b) Son
0%
c) Grand daughter
0%
d) Grand son
Q.36.
Hyperchromism is presence of .... ... [ BHU 1998 ]
50%
a) Some chromosome more than once
50%
b) Some type of chromosome less than once
0%
c) Variable chromosomes in nucleus
0%
d) none of the above
Q.37.
Both extra-nuclear as well as nuclear materials are involved in transmission of hereditary information as .... .. [ CPMT 1991 ]
50%
a) Mitochondria and plastids are having DNA
50%
b) Both cytoplasm and nuclear material are equally involved in heredity
0%
c) Each type of organisms have particular mitochondria or plastids
0%
d) Some cells are prokaryotic
Q.38.
Strength of linkage is related inversely to distance between .... .... [ AIIMS 2001 ]
50%
a) Genes mutation
50%
b) Chromosome mutation
0%
c) Gene modification
0%
d) Aneuploidy
Q.39.
One barr body is found in man of genotype ... .. [ CPMT 1993 ]
100%
a) XY
0%
b) XXXY
0%
c) XXY
0%
d) XX
Q.40.
A chromosome with sub-terminal centromere is .... .. [ MPPMT 1997]
50%
a) Acentric
0%
b) Acrocentric
0%
c) Metacentric
50%
d) Telocentric
Q.41.
Trisomy has chromosome complement of ... .. [ DPMT 2002 ]
100%
a) 2n - 1
0%
b) 2n - 1 -1
0%
c) 2n +1+1
0%
d) 2n + 1
Q.42.
Solenoid is structure of ... ... [ kerala 2006 ]
50%
a) Nucleosomal organistaion with 10 nm thickness
0%
b) Condensed chromatin fibre with 30nm diameter
0%
c) Well organized chromatid with 700 nm thickness
50%
d) Well organized chromosome with 1400 nm thickness
Q.43.
Numerical change in chromosome number which is not the exact multiple of haploid genome is .... ... [ AMU 1993 ]
50%
a) Triploid
50%
b) Allopolyploid
0%
c) Autopolyploid
0%
d) Aneuploid
Q.44.
Syndrome in which somatic cells contain three sex chromosomes XXY, is .... .. [ JKCET 2012]
50%
a) Turner's syndrome
0%
b) Down's syndrome
50%
c) Klinefelter's syndrome
0%
d) Super female
Q.45.
Colchicine brings about ... .. [ JKCMEE 2004 ]
50%
a) Gene mutation
0%
b) Chromosome aberration
50%
c) Quick replication
0%
d) Duplication of chromosomes
Q.46.
Find the correct combination. Cytoplasmic inheritance is due to .... [BHU 2008] Mitochondria 2.. Cilia Cytoplasmic particlesCell wall
50%
a) 1, 2, 3 correct
0%
b) 1, 2 correct
50%
c) 2, 4 correct
0%
d) 1, 3 correct
Q.47.
Sex of a child is due to ... .. [ CPMT 1992 ]
0%
a) Size of ovum
50%
b) Health of father
50%
c) Sex chromosome of father / sperm
0%
d) Sex chromosome of mother/ ovum
Q.48.
A condition of not having exact multiple of haploid set is ... .. [ JKCMEE 2003 ]
50%
a) Aneuploidy
0%
b) Synploidy
0%
c) Polyploidy
50%
d) All the above
Q.49.
Monosomics are ... .. [ AMU 1991 ]
0%
a) n
50%
b) 2n + 1
0%
c) 2n - 2
50%
d) 2n - 1
Q.50.
Match the columns
a) Monoploidy
2n-1
b) Monosomy
2n+1
c) Nullisomy
2n+2
d) Trisomy
2n-2
e) Tetrasomy
n
- -
3n
0%
a) a - 6, b - 5, c -3, d - 4, e - 2
50%
b) a - 5, b - 2, c -4, d - 1, e - 3
50%
c) a - 5, b - 1, c -4, d - 2, e - 3
0%
d) a - 1, b - 5, c -3, d - 2, e - 4
Support mcqgeeks.com by disabling your adblocker.
Please disable the adBlock and continue. Thank you.