Principles of Inheritance and Variation MCQ Questions & Answers in Botany

401. Neo-Darwinism belives that new species develop through

A Mutations

B Hybridization

C Mutations with natural selection

D None of the above

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402. Albinism in corn is due to

A Pathogenic effect

B Deficiency of light

C Deficiency of minerals

D Lethal gene effect

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403. Test cross can not be performed in

A Neurospora

B Man

C Pea

D Dogs

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404. First geneticist/ father of genetics was

A de Vries

B Mendel

C Darwin

D Morgan

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405. A woman with normal vision, but whose father was colour blind, marries a colour blind man. Suppose that the fourth child of this couple was a boy. This boy

A may be colour blind or may be of normal vision

B must be colour blind

C must have normal colour vision

D will be partially colour blind since he is heterozygous for the colour blind mutant allele

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406. Gene word was coined by

A Mendel

B Hugo-de-vries

C Morgan

D Johanson

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407. Genetic variation in a population arises due to

A Mutations only

B Recombination only

C Mutations as well as recombination

D Reproductive isolation and selection

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408. If Mendel had studied the 7 traits using a plant with 12 chromosomes instead of 14, in what way would his interpretation have been different ?

A He would have discovered blending or incomplete dominance

B He would not have discovered the law of independent assortment

C He would have discovered sex linkage

D He could have mapped the chromosome

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409. Which of the following is significance of dominance

A Organisms with dominant genes are more vita

B Harmful mutations are not expressed due to dominant gene

C Heterosis is due to dominant gene

D All of the above

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410. Which of the following is a genetic or heritabledisease

A Night blindness

B Leukemia and Leprosy

C Phenyl-keton-urea

D Cataract

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401. Neo-Darwinism belives that new species develop through

402. Albinism in corn is due to

403. Test cross can not be performed in

404. First geneticist/ father of genetics was

405. A woman with normal vision, but whose father was colour blind, marries a colour blind man. Suppose that the fourth child of this couple was a boy. This boy

406. Gene word was coined by

407. Genetic variation in a population arises due to

408. If Mendel had studied the 7 traits using a plant with 12 chromosomes instead of 14, in what way would his interpretation have been different ?

409. Which of the following is significance of dominance

410. Which of the following is a genetic or heritabledisease

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