Biology MCQs

Biology

Chromosome and DNA


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#33

The condtion in which a zygote contains three copies of a particular chromosome as a result of non-disjunction is called?

A)  Trisomy

B)  Monosomy

C)  Triploidy

D)  Monoploidy

Answer:   A
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#34

The term chromosome was proposed by

A)  Walther

B)  Waldeyer

C)  Sutton

D)  Morgan

Answer:   B
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#35

Penicillium, a fungus, has how many pairs of chromosomes?

A)  1

B)  2

C)  3

D)  500

Answer:   A
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#36

Wheat is

A)  Diploid

B)  Triploid

C)  Tetraploid

D)  Hexaploid

Answer:   D
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#37

Nucleosome string thickness is

A)  10nm

B)  30nm

C)  200nm

D)  700nm

Answer:   A
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#38

Pangenesis theory about inheritance was proposed by

A)  Waldeyer

B)  Darwin

C)  Sutton

D)  Walther

Answer:   B
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#39

The term gene was introduced by

A)  Mendel

B)  William

C)  Wilhelm

D)  De Vries

Answer:   B
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#40

Hershey and chase used which one of the following organisms to prove DNA is the hereditary material?

A)  Bacteria

B)  Bacteriophage

C)  Protozoa

D)  None of these

Answer:   B
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