NEET Biology MCQ - Genetic Basis Of Inheritance Mcq - Quiz-9 Solution

Q.1.

Holandric gene/direct transmission of traits from father to son occurs through ... ... [ MPPMT 2000 ]

0%
a) Autosomes
33%
b) X- chromosomes
67%
c) Y-chromosome
0%
d) None of the above

Explanation

Q.2.

A super male XYY is characterized by .... ...

50%
a) under production of sex hormones
0%
b) Overproduction of sex hormones
50%
c) Reduced intelligence but aggressive nature
0%
d) Both B and C

Explanation

Q.3.

Find the correct combination. Linkage groups Have genes which are linked in single chromosomes Show independent assortment. Do not show independant assortment In prokaryotes more than one ... .... [ BHU 2008 ]

0%
a) 1, 2, 3 correct
100%
b) 1, 2 correct
0%
c) 2, 4 correct
0%
d) 1, 3 correct

Explanation

Q.4.

Crossing over occurs in . ....

50%
a) Four strand stage
50%
b) Three strand stage
0%
c) Two strand stage
0%
d) Single strand stage

Explanation

Q.5.

A strong mutagen is ... .. [ JKMCEE 1994 ]

50%
a) Cold
50%
b) Heat
0%
c) Water
0%
d) X-ray

Explanation

Q.6.

Genes that change their location on chromosome are .... ... [ MPPMT 2004 ]

50%
a) Split genes
50%
b) Duplicate genes
0%
c) Jumping genes
0%
d) Pleiotropic genes

Explanation

Q.7.

turner's Syndrome where individuals are phenotypic ally female but have rudimentary sex organs and mammary glands is due to absence of .... ... [ MPPMT 2002 ]

50%
a) Both X-chromosomes
0%
b) Y-chromosomes
50%
c) One X chromosome/ 44+XO
0%
d) X-Y-chromosomes

Explanation

Q.8.

Colchicine brings about ... ... [ BHU 2001]

100%
a) Polyploidy
0%
b) Cell division
0%
c) Cell elongation
0%
d) Cell differentiation

Explanation

Q.9.

Both husband and wife have normal vision though their father were colour blind. The probability of their daughter becoming colour blind is ... ... [ CBSE 1990 ]

50%
a) 0%
0%
b) 25%
50%
c) 50%
0%
d) 75%

Explanation

Q.10.

Formation of multivalent in meiosis is due to .... ... [ CBSE 1998 ]

50%
a) Deletion
0%
b) Inversion
50%
c) Monosomy
0%
d) Reciprocal translocation

Explanation

Q.11.

In Drosophila female has a pair of chromosomes .... ... [ MPPMT 2011 ]

0%
a) ZZ
50%
b) XX
0%
c) YY
50%
d) ZW

Explanation

Q.12.

Diploid cells have ... ... [ DPMT 2009 ]

50%
a) One set of chromosomes
0%
b) Two sets of chromosomes
0%
c) Two pairs of homologous chromosomes
50%
d) Two chromosomes

Explanation

Q.13.

Genes located on Y-chromosome are .... ... [ AIIMS 1997 ]

50%
a) Mutant genes
50%
b) Sex-linked genes
0%
c) Autosomal genes
0%
d) Holandric genes

Explanation

Q.14.

Identify the wrong statement ... ... [ kerala 210 ]

50%
a) Human males have one sex chromosome much shorter than others
50%
b) In domesticated Fowl, sex of progeny depends upon type of sperm that fertilizes the egg.
0%
c) In Male Grasshopper, 50% of sperms have no sex chromosome
0%
d) Female birds produce two types of gametes based on sex chromosomes

Explanation

Q.15.

Turner's syndrome is represented by ... ... [ BHU 2003 ]

50%
a) XYY
0%
b) XO
50%
c) XXY
0%
d) XXX

Explanation

Q.16.

Haemophilia is .... .. [ JKCMEE 2002 ]

50%
a) Autosomal disease
0%
b) Bacterial disease
0%
c) Viral disease
50%
d) Sex linked disease

Explanation

Q.17.

Muller was awarded Nobel prize in 1946 for his work on ... .. [ CBSE 1996 ]

50%
a) Protein synthesis
50%
b) Chemistry of nucleic acids
0%
c) Cancer
0%
d) X-ray induced mutations

Explanation

Q.18.

Monosomic trisomy is .... ... [ kerala 2004 ]

100%
a) 2N-2+1
0%
b) 2N-1-1
0%
c) 2N-1
0%
d) 2N+1+1

Explanation

Q.19.

Mutation is change that is ... .. [ BHU 1991 ]

50%
a) Never inherited
50%
b) Inherited only in F2 generation
0%
c) Inherited
0%
d) Responsible for plant growth

Explanation

Q.20.

In Morgan's experiments on linkage, the percentage of white eyed miniature winged recombinants in F2 generation is ... ... [ kerala 2009 ]

50%
a) 1.3
50%
b) 62.8
0%
c) 37.2
0%
d) 73.2

Explanation

Q.21.

Three gene a, b, c show crossing over 20% between a and b, 28% between b and c and 8% between a and c. Sequence of gene will be ... ... [ CBSE 2002 ]

50%
a) b a c
0%
b) a b c
50%
c) a c b
0%
d) none of the above

Explanation

Q.22.

Wilson disease is associated with abnormal metabolism of ... .. [ Pb PMT 2005 ]

0%
a) Iron
100%
b) Potassium
0%
c) Copper
0%
d) Iodine

Explanation

Q.23.

Mutation is .... ... [ BHU 1998 ]

0%
a) Change in gene frequency
100%
b) Genetic drift
0%
c) Change in base pairs in DNA molecule
0%
d) Environmental mechanism of evolution

Explanation

Q.24.

Sickle cells anaemia is ... ... [ DPMT 2009 ]

100%
a) Autosomal dominant inheritance.
0%
b) X-linked recessive inheritance
0%
c) Autosomal recessive inheritance
0%
d) X-linked dominant inheritance

Explanation

Q.25.

Barr body is observed in ... .. [ Kerala 2005 ]

100%
a) Basophils of male
0%
b) Neutrophils of female
0%
c) Basophils of female
0%
d) Eosinophils

Explanation

Q.26.

Barr body represents ... ... [ JIPMER 1997 ]

100%
a) Heterochromatin in male and female cells
0%
b) All heterochromatin in female cells
0%
c) One of two X-chromosomes in somatic cells of female
0%
d) Y-chromosomes in somatic cells

Explanation

Q.27.

Huntingston's chorea is .... .. [ KCET 1995 ]

0%
a) Common in Korea
100%
b) Nervous degeneration causing involuntary shaking of legs, arms, head
0%
c) Disease of kidney
0%
d) Related to diabetes

Explanation

Q.28.

Due to non disjunction of chromosome during spermatogenesis some sperms carry both sex chromosomes ( 22A + XY) while others do not carry any sex chromosome ( 22A + O). If these sperms fertilize normal eggs (22A + X), what type of genetic disorders appear among the offspring. ..... [ KCET 2010]

100%
a) Turner's syndrome and Klinefelter's syndrome
0%
b) Down's syndrome and Klinefelter's syndrome
0%
c) Down's syndrome and Turner's syndrome
0%
d) Down's syndrome and Cri-du-chat syndrome

Explanation

Q.29.

Mongolism is ... ... [ MPPMT 2004 ]

100%
a) Turner's syndrome
0%
b) Klinefelter's syndrome
0%
c) Down's syndrome
0%
d) Hypothalamic syndrome

Explanation

Q.30.

Doubling of chromosomes is .... ... [ Odisha 2012 ]

0%
a) Polyteny
50%
b) Transcription
50%
c) Duplication
0%
d) Translation

Explanation

Q.31.

Plant in which chromosomal basis of sex determination was discover first is ... .. [ AIIMS 1996 ]

100%
a) Rumex
0%
b) Melandrium
0%
c) Coccinia
0%
d) Sphaerocarpus

Explanation

Q.32.

Point mutation is ... ... [ CBSE 2009 ]

0%
a) Loss of gene
50%
b) Change in a base of gene
0%
c) Addition of gene
50%
d) Deletion of a segment of gene

Explanation

Q.33.

Drosophila melanogaster possesses ... ... [ MPPMT 1997 ]

50%
a) 3 pairs autosomes + 1 pair sex chromosomes
50%
b) 2 pairs autosomes + 2 pair sex chromosomes
0%
c) 1 pairs autosomes + 3 pair sex chromosomes
0%
d) 2 pairs autosomes + 1 pair sex chromosomes

Explanation

Q.34.

Sickle cells anaemia is due to mutation of .... ...

50%
a) CTC to CAC
50%
b) CTG to CAG
0%
c) CAG to CTC
0%
d) CGC to CAC

Explanation

Q.35.

Wheat plant is 6n =What will be the number of chromosomes in its monosomic haploid and monoploid? .... ... [DPMT 1996]

0%
a) 43, 21 and 7
100%
b) 41, 21 and 7
0%
c) 15, 7 and 7
0%
d) 13, 7 and 7

Explanation

Q.36.

Genes exclusively present on Y-chromosome are called ... .. [ kerala 2000 ]

100%
a) Sex-linked
0%
b) Holandric
0%
c) Hologynic
0%
d) Histone

Explanation

Q.37.

Aneuploidy is zygotic chromosome number ... ... [ AMU 1992 ]

100%
a) thrice of gametic number
0%
b) twice of gametic number
0%
c) quadruple of gametic number
0%
d) abnormal

Explanation

Q.38.

Cytoplasmic inheritance is due to .... ...

100%
a) Plastids
0%
b) Mitochondria
0%
c) Cytoplasmic particles
0%
d) All the above

Explanation

Q.39.

Diploid chromosome number in humans is ... ... [ MPPMT 1994 ]

100%
a) 46
0%
b) 44
0%
c) 48
0%
d) 42

Explanation

Q.40.

A pleiotropic gene : [ ReAIPMT 2015]

100%
a) controls multiple traits in an individual
0%
b) is expressed only in primitive plants
0%
c) is a gene evolved during Pliocene
0%
d) control of trait only in combination with another gene

Explanation

Q.41.

A ten year patient is found to have slanting eyes with epicanthic fold, hypertelorism, dysplastic ears, mongoloid face and protruding tongue. the patient is suffering from ....

100%
a) Down's syndrome
0%
b) Klinefelter's syndrome
0%
c) Turner's syndrome
0%
d) Cri-due-chat syndrome

Explanation

Q.42.

Phenylketonuria is autosomal recessive disorder of chromosome .... ... [ AMU 2009 ]

100%
a) 11
0%
b) 12
0%
c) 16
0%
d) 17

Explanation

Q.43.

Match the columns

Column I	Column II
(a) Down's Syndrome	(p) An additional sex chromosome
(b) Cri-du-chat Syndrome	(q) Loss of a part of chromosomes 5
(c) Klinefelter's Syndrome	(r) Absence of sex chromosome
(e) Turner's Syndrome	(s) Presence of an extra chromosome
- -	(t) Presence of two extra chromosomes

0%
a) a - s; b - q ; c - p; d - r
100%
b) a - t; b - s ; c - p; d - q
0%
c) a - s; b - p ; c - q; d - r
0%
d) a - s; b - q ; c - r; d - p

Explanation

Q.44.

A disease which is inherited as an autosomal dominant condition .... ...

100%
a) Haemophilia
0%
b) Huntington's chorea
0%
c) Colour blindness
0%
d) Cri-du-chat

Explanation

Q.45.

An abnormality not due to recessive gene is ... ... [ AMU 2011]

100%
a) Phenylketonuria
0%
b) Alkaptonuria
0%
c) Polydactyly
0%
d) Tay-Sach's syndrom

Explanation

Q.46.

Number of chromosomes can increase or decrease due to ... ... [AFMC 1996]

100%
a) Mutation
0%
b) Genetic repetition
0%
c) Non disjunction
0%
d) All the above

Explanation

Q.47.

Total number of base pairs found in human genome is .... ... [ AIIMS 2004 ]

100%
a) 3.5 million
0%
b) 35000
0%
c) 35 billion
0%
d) 3.1 billion

Explanation

Q.48.

A colour blind mother and normal father would have ... .. [ CBSE 1992]

50%
a) Colour blind son and normal/ carrier daughters
0%
b) Colour blind sons and daughters
50%
c) All colour blind
0%
d) All normal

Explanation

Q.49.

Methylation of DNA commonly occurs in the sequence .... .... [ Odisha 2006 ]

50%
a) CmG
0%
b) CmA
0%
c) CmT
50%
d) CmC

Explanation

Q.50.

Which is not mutagen? ... ... [ MPPMT 1995 ]

0%
a) Acetic acid
100%
b) Gamma rays
0%
c) Nitrous acid
0%
d) Hydroxylamine

Explanation

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