Biology - Questions and Answers, General Study (GK)

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Biology - Questions and AnswersPage 33

321.

Insect resistant cotton plant have been genetically engineered by inserting a gene from a

(a)Virus

(b)Bacterium

(c)Insect

(d)Plant

Comment

Answer is: BNA

322.

Which one of the following is not a genetic disorder?

(a)Colour blindness

(b)Down's syndrome

(c)Haemophilia

(d)Xerophthalmia

Comment

Answer is: DNA

323.

Who is responsible for the sex determination of a child?

(a)Father

(b)Mother

(c)Both (a) and (b)

(d)None of these

Comment

Answer is: ANA

324.

By which combination of chromosome, a child will be male?

(a)X from male and X from female

(b)X from male and Y from female

(c)Y from male and X from female

(d)Y from male and Y from female

Comment

Answer is: CNA

325.

The number of DNA molecules per chromatids are

(a)One

(b)Two

(c)Three

(d)Four

Comment

Answer is: ANA

326.

The nucleosome is

(a)Histone proteins

(b)DNA wrapped around histones

(c)RNA wrapped around histones

(d)DNA wrapped around acidic protein

Comment

Answer is: BNA

327.

In DNA molecule, thymine is 20%, then guanine will be

(a)10%

(b)20%

(d)40%

Comment

Answer is: CNA

328.

In prokaryotes, multiple ribosomes (polysomes) participate in

(a)Translation process

(b)Transcription process

(c)Linkage

(d)Crossing over

Comment

Answer is: ANA

329.

Which one of the following is a hereditary disease?

(a)Cataract

(b)Haemophilia

(c)Pellagra

(d)Osteoporosis

Comment

Answer is: BNA

330.

Change in the sequence of nucleotide in DNA is called as

(a)Mutagen

(b)Mutation

(c)Recombination

(d)Translation

Comment

Answer is: BNA

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Biology - Questions and AnswersPage 33

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