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Animal Biotechnology Chromosomes MCQ Questions & Answers

Animal Biotechnology Chromosomes MCQs : This section focuses on the "Animal Biotechnology Chromosomes". These Multiple Choice Questions (MCQs) should be practiced to improve the Animal Biotechnology Chromosomes skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.




Question 1

Transmission of a gene from male parent to female child to male grand child is known as

A. holandric inheritance
B. quantitative inheritance
C. criss-cross inheritance
D. maternal inheritance

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Question 2

In an organism, the chromosome number is maintained constant because of

A. independent assortment
B. crossing over
C. DNA duplication
D. synapsis

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Question 3

If two genes show 50% recombination

A. they are on different chromosomes
B. they are on same chromosome but far apart
C. Both A and B
D. they are closely located on the same chromosome

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Question 4

Which of the following denotes a pair of contrasting characters?

A. Alleles
B. Phenotype
C. Homozygous
D. Genotype

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Question 5

Raphanobrassica is a classical example of

A. aneuploidy
B. nullisomy
C. allopolyploidy
D. None of the above

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Question 6

An odd number of cross overs in inverted region will result into formation of a dicentric chromatid and acentric chromatid at anaphase I incase of

A. pericentric inversion
B. paracentric inversion
C. double inversion
D. none of these

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Question 7

Hairy wing character of Drosophila is due to

A. duplication in region of chromosome
B. deletion in region of chromosome
C. due to presence of additional X-chromosome
D. due to a point mutation

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Question 8

A map of chromosomes that utilizes cloned and sequenced DNA fragments rather than genetic markers is known as

A. a physical map
B. a genetic map
C. a cloning map
D. None of the above

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Question 9

Incase of inversion when the inverted segment of chromosome includes centromere, it is known as

A. paracentric inversion
B. double inversion
C. inverted inversion
D. pericentric inversion

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Question 10

The degree or extent to which a given genotype is expressed phenotypically in a particular individual is defined as

A. penetrance
B. expressivity
C. inheritance strength
D. environmental influence

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Question 11

Diethyl stilbestrol (DES), a synthetic estrogen causes

A. chromosome lagging
B. disruption of mitotic spindle
C. centriole elongation
D. All of the above

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Question 12

A cross shaped (+) or a ring involving four chromosomes may be formed during metaphase I in case of

A. translocation heterozygote
B. deficiency
C. haploid organism
D. duplication

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Question 13

Exchange of segments between non homologous chromosomes is best known as

A. translation
B. translocation
C. recombination
D. crossing over

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Question 14

If two genes show 50% recombination

A. they are on different chromosomes
B. they are on same chromosome but far apart
C. both (a) and (b)
D. they are closely located on the same chromosome

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Question 15

A map of chromosomes that utilizes cloned and sequenced DNA fragments rather than genetic markers is known as

A. a physical map
B. a genetic map
C. a cloning map
D. none of these

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Question 16

How many chromosomes are there in Caernorhabditis elegans?

A. 3
B. 6
C. 9
D. 12

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Question 17

An odd number of cross overs in inverted region will result into formation of a dicentric chromatid and acentric chromatid at anaphase I incase of

A. pericentric inversion
B. paracentric inversion
C. double inversion
D. None of the above

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Question 18

Which of the following is correct when a character shows continuous variation assuming a normal distribution?

A. It is governed by many genes with small cumulative effect
B. It is not controlled genetically
C. Many of the variation is due to fluctuation of climate
D. None of the above

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Question 19

Bar eye character of Drosophila is due to

A. duplication in region of 16A of X chromosome
B. deletion in region of 16A of X chromosome
C. due to presence of additional X-chromosome
D. due to a point mutation in eye-locus

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Question 20

How does dosage compensation in Drosophila occur?

A. Hypertranscription of male X chromosome
B. Hypotranscription of female X chromosome
C. X inactivation in females
D. Chimerism

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Question 21

In a dihybrid cross, the progeny of an Fl individual (hetero2ygous for both characters) will show a phenotypic ratio of

A. 1:1:1:1
B. 1:2:2:1
C. 9:3:3:1
D. 3:1:1:3

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Question 22

A diagram depicting chromosomes of haploid set of an organism ordered in a series of decreasing size is known as

A. zymogram
B. chromogram
C. idiogram
D. karyogram

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Question 23

How many chromosomes are there in the budding yeast (S. cerevisiae)?

A. 16
B. 17
C. 18
D. 20

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Question 24

The percentage of individual with a given genotype, which exhibits the associated phenotype, is defined as

A. penetrance
B. expressivity
C. inheritance percent
D. environmental influence

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