Q.1.
Extra nuclear genes are present in ... ... [ CBSE 2000 ]
-
0%
a) Cytoplasm
-
14%
b) E.R. and cytoplasm
-
29%
c) Ribosome and cytoplasm
-
57%
d) Mitochondria and cytoplasmic particles
Q.2.
Maize with 10 pairs of chromosomes has linkage groups ... .. [ MPPMT 1999]
-
25%
a) 40
-
50%
b) 20
-
25%
c) 10
-
0%
d) 5
Q.3.
Match the column
| a | Sickle cell anaemia | 1. | Sex-linked |
| b | Colour blindness | 2. | Autosomal 7 |
| c | phenylketonuria | 3. | Autosomal chromosome 11 |
| d | Cystic fibrosis | 3. | Autosomal chromosome 4 |
| e | Huntington's chorea | 4. | Autosomal chromosome 12 |
-
50%
a) a-3, b-5, c-1, d-2, e-4
-
0%
b) a-3, b-1, c-5, d-2, e-4
-
25%
c) a-4, b-1, c-5, d-2, e-3
-
25%
d) a-5, b-1, c-2, d-3, e-4
Q.4.
Which of the following is a case of auto-allopolyploidy?
-
50%
a) AA, AA, AA
-
0%
b) AA, AA, BB
-
50%
c) AA-1
-
0%
d) 2n-2
Q.5.
Probability of all the four sons of a couple is ... .. [ CBSE 2001 ]
-
0%
a) 1/14
-
33%
b) 1/8
-
33%
c) 1/16
-
33%
d) 1/32
Q.6.
The phenomenon of movement of DNA segment from one chromosome to another is .... ... [ DPMT 1999 ]
-
17%
a) DNA replication
-
50%
b) DNA transposition
-
17%
c) DNA recombination
-
17%
d) DNA hybridisation
Q.7.
Most of the mutations are ... ...
-
67%
a) Forward
-
0%
b) Backward
-
0%
c) Reversible
-
33%
d) Lethal
Q.8.
Diagrammatic representation of chromosomes is .... .. [ manipal 2005 ]
-
0%
a) Karyotype
-
67%
b) Idiogram
-
33%
c) Chromosome map
-
0%
d) Phenogram
Q.9.
What is not true of haemophilia? [ kerala 2003]
-
50%
a) Bleeder's disease
-
50%
b) Royal disease
-
0%
c) X-linked disorder
-
0%
d) Y-linked disorder
Q.10.
Under electron microscope, chromatin fibers appears like beads in a string. the beads are ... ... .. [ AMU 2001 ]
-
50%
a) Chromomeres
-
0%
b) Nucleosomes
-
50%
c) Solenoids
-
0%
d) Chromonema
Q.11.
A female fruit fly heterozygous for sex-linked genes is mated with normal male fruit fly. Male specific chromosome will enter the egg cells in proportion of .... ... [ CBSE 1997]
-
100%
a) 1 : 1
-
0%
b) 2:1
-
0%
c) 3:1
-
0%
d) 7:1
Q.12.
Which one is not related to chromosomal abnormality? [ MPPMT 1995 ]
-
33%
a) Barr body
-
33%
b) Trisomy
-
33%
c) Monosomy
-
0%
d) Nullisomy
Q.13.
Choose the correct combination .... [ kerala 2006 ]
| a) Walter Sutton; | 1) Discovered penicillin |
| b) Thomas Hunt Morgan | 2) Discovered chromosomal basis of heredity |
| c) James Watson | 3) Described the phenomenon of linkage and crossing over |
| d) Alexander Fleming | 4) Discovered double helical structure of DNA |
-
50%
a) a - 1, b - 4, c - 2, d - 3
-
50%
b) a - 2, b - 3, c - 1, d - 4
-
0%
c) a - 3, b - 2, c - 1, d - 4
-
0%
d) a - 2, b - 3, c - 4, d - 1
Q.14.
Human chromosomes have been grouped on the basis of size and centromere into types ... ... [ MPPMT 2002 ]
-
100%
a) 5
-
0%
b) 6
-
0%
c) 7
-
0%
d) 10
Q.15.
Hexaploid or modern wheat developed through .... .. [ AIIMS 1997 ]
-
0%
a) Hybridomas
-
0%
b) Chromosome doubling
-
100%
c) Hybridisation
-
0%
d) Hybridisation and chromosome doubling
Q.16.
haemophilia is more common in males because it is a .... .. [ CBSE 1990 ]
-
0%
a) Recessive character carried by chromosome
-
0%
b) Dominant character carried by chromosome
-
50%
c) Dominant trait carried by X-chromosome
-
50%
d) Recessive trait carried by X-chromosome
Q.17.
AB genes are linked. What is genotype of the progeny in a cross between AB/ab and aabb. .... [ CBSE 2001 ]
-
0%
a) AABB and aabb
-
50%
b) AaBb and aabb
-
50%
c) AAbb and aaBB
-
0%
d) AaBb and AaBb
Q.18.
A mutation limited to substitution of one nucleotide for another is called .... ... [ kerala 2008 ]
-
0%
a) Base inversion
-
50%
b) Point mutation
-
50%
c) Translocation
-
0%
d) frame shift mutation
Q.19.
In XO type of sex determination .... .. [ kerala 2012 ]
-
50%
a) Females produce two types of gametes
-
50%
b) Males produce two types of gametes
-
0%
c) Females produce single type of gametes
-
0%
d) Males produce single type of gametes
Q.20.
Genetic map is one that ... ... [ CBSE 2003 ]
-
50%
a) Establishes sites of the gene on a chromosomes
-
50%
b) Establishes the various stages in gene evolution
-
0%
c) Shows the stages during cell division
-
0%
d) Shows distribution of various species in a region
Q.21.
The phenomenon of closely placed genes being inherited together is ... ... [ DPMT 2008]
-
100%
a) Linkage
-
0%
b) Crossing over
-
0%
c) Gene interaction
-
0%
d) Qualitative inheritance
Q.22.
DNA parts which can switch their position are .... ... [ CBSE 1998 ]
-
33%
a) Exons
-
33%
b) Introns
-
0%
c) Cistrons
-
33%
d) transposons
Q.23.
Paramecium shows cytoplasmic inheritance through ... ... [ BHU 2012 ]
-
0%
a) Chromosome
-
0%
b) nuclear gene
-
100%
c) Kappa particles
-
0%
d) DNA
Q.24.
Haemophiliac man marries a normal woman. their offspring will be ... ... [ MPPMT 1993 ]
-
50%
a) All normal
-
0%
b) All haemophiliac
-
50%
c) All boys haemophiliac
-
0%
d) All girls haemophiliac
Q.25.
Given below is a pedigree chart with symbols for sex-linked trait in humans The trait of the above pedigree chart is .... .. [ AIIMS 2005 ]
-
0%
a) Recessive Y-linked
-
33%
b) Recessive X-linked
-
67%
c) Dominant Y-linked
-
0%
d) Dominant X-linked
Q.26.
In human beings 45 chromosomes/ single X/XO abnormality causes ... ... [ CBSE 1993]
-
100%
a) Down's syndrome
-
0%
b) Klinefelter's syndrome
-
0%
c) Turner's syndrome
-
0%
d) Edward's syndrome
Q.27.
Colchicine was discovered by .... .. [ AMU 2003 ]
-
33%
a) Flemming
-
33%
b) Blakeslee
-
0%
c) Dumas
-
33%
d) Muller
Q.28.
Find out the mismatch .. ... [ CET Chd. 2001 ]
-
50%
a) Klinefelter's syndrome - XO
-
50%
b) Haemophilia - sex linked
-
0%
c) Down's syndrome - autosomal aneuploidy
-
0%
d) Turner's syndrome - females with retarded sexual development
Q.29.
Foetal sex can be determined from cells present in amniotic fluid by looking for ... ... [ CBSE 1997]
-
0%
a) Kinetochores
-
0%
b) Chiasmata
-
50%
c) Barr bodies and sex chromosomes
-
50%
d) Autosomes
Q.30.
Autosomes in humans are ... ... [ MPPMT 1995 ]
-
0%
a) 11 pairs
-
100%
b) 22 pairs
-
0%
c) 23 pairs
-
0%
d) 43 pairs
Q.31.
A diseased man marries a normal woman. The couple has 3 daughter and 5 sons. the daughter are diseased while the sons are normal. the gene of the disease is .... ... [ CBSE 2002 ]
-
100%
a) Sex-linked recessive
-
0%
b) Sex-linked dominant
-
0%
c) Autosomal character
-
0%
d) Sex limited character
Q.32.
Mental retardation associated with chromosomal abnormality is due to .... .[ CBSE 1998 ]
-
50%
a) Reduction in X-complement
-
50%
b) Increase in X-complement
-
0%
c) Moderate increase in Y-complement
-
0%
d) large increase in Y-complement
Q.33.
Assertion Polytene chromosomes have a high amount of DNA Reason: Polytene chromosomes are formed by repeated replication of chromosomal DNA without separation of chromatids .... .. [ AIIMS 2006 ]
-
50%
a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
-
50%
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.34.
Sex is determined in human beings ... .. [BHU 2000 ]
-
0%
a) By ovum
-
0%
b) At time of fertilization
-
50%
c) 40 days after fertilization
-
50%
d) seventh to eight week when genitals differentiate in foetus
Q.35.
Colour blindness occurs due to .... ... [ Odisha 2011 ]
-
50%
a) Recessive gen X-chromosome
-
0%
b) Dominant gene on X-chromosome
-
50%
c) Recessive gene on an autosome
-
0%
d) Dominant gene on an autosome
Q.36.
Male sex is determined in human zygote by ... .. [ Pb. PMT 1999 ]
-
0%
a) Nutrition of mother
-
0%
b) Strength of father
-
50%
c) Chromosome composition of egg
-
50%
d) Chromosome composition of sperm
Q.37.
Mutations altering nucleotide sequence within a gene are .... ... [ CPMT 2004 ]
-
50%
a) frame shift mutations
-
0%
b) Base pair substitution
-
50%
c) Both A and B
-
0%
d) None of the above
Q.38.
A normal woman whose father was colour blind marries a normal man. the progeny would be .... ... ] kerala 2003 ]
-
0%
a) Sons normal, daughter colour blind
-
50%
b) Sons colour blind, daughter normal
-
50%
c) 50% sons colour blind, remaining 50% normal
-
0%
d) Both sons and daughter are colour blind
Q.39.
Hypertrichosis of pinna occurs only in male because ... ... [ KCET 2008 ]
-
0%
a) Estrogen suppresses the trait in females
-
50%
b) It is induced by testosterone in males
-
50%
c) Gene for it is present only on Y-chromosome
-
0%
d) Its gene is recessive in females and dominant in males
Q.40.
Sex limited and sex-linked genes are located on ... ... [ Pb.PMT 2005 ]
-
0%
a) Autosomes
-
0%
b) X-chromosome
-
50%
c) Y-chromosome
-
50%
d) Both A and B
Q.41.
X- ray induced mutations were introduced in maize for the first time nu .... ... [ AIIMS 1996 ]
-
33%
a) Muller
-
33%
b) Stadler
-
0%
c) Morgan
-
33%
d) Singleton
Q.42.
Accumulation of protein, amyloid β-peptide, in human brain causes ... ... [ kerala 2006 ]
-
50%
a) Addison's disease
-
0%
b) Huntington's disease
-
0%
c) Alzheimer's disease
-
50%
d) Motor neuron diseases
Q.43.
A woman has a child with Klinefelter's syndrome. Number of barr bodies present in the child is .... ... [ Har.PMT 2000 ]
-
100%
a)One
-
0%
b) Two
-
0%
c) Three
-
0%
d) None
Q.44.
A colour blind woman marries a normal vision male. in the offspring ... ... [ CBSE 1994 ]
-
0%
a) Both sons and daughters are colour blind
-
0%
b) All daughters are colour blind
-
50%
c) All sons are normal
-
50%
d) All sons are colour blind, daughters carriers
Q.45.
A man is sterile due to improper development of testis which has an additional X-chromosome. he is suffering from ... ... [ MPPMT 2002 ]
-
50%
a) Turner's syndrome
-
0%
b) Huntington's disease
-
50%
c) Klinefelter's syndrome
-
0%
d) Marfan's syndrome
Q.46.
A mutation at a gene locus changes a character due to change in ... ... [ CBSE 2004 ]
-
50%
a) DNA replication
-
50%
b) Protein synthesis pattern
-
0%
c) RNA transcription pattern
-
0%
d) Protein structure
Q.47.
Single step large mutation leading to specification ... ... [ kerala 2010 ]
-
50%
a) Founder effect
-
50%
b) Adaptive radiation
-
0%
c) Saltation
-
0%
d) Branching descent
Q.48.
Determination of percentage of crossing over between two linked genes is important in ... .... [ AMU 1999 ]
-
0%
a) Maintaining heterozygosity in population
-
100%
b) Indicating relative position of genes in chromosomes
-
0%
c) Fixation of heterosis in organisms
-
0%
d) Explaining the phenomenon of coupling and repulsion
Q.49.
Study the pedigree chart of certain family given here and select the correct conclusion .... ... [CBSE 2010 ]
-
0%
a) The female parent is heterozygous
-
50%
b) The parents could not have had a normal daughter for this character
-
0%
c) The trait under study could not be colour blindness
-
50%
d) The male parent in homozygous could not be colour blindness
Q.50.
Genome represents ... ... [ BHU 1991 ]
-
0%
a) Haploid chromosomes set
-
50%
b) Complete chromosomes set
-
0%
c) Diploid chromosome set
-
50%
d) All the gene present in the population