Who discovered that biological chromosomes carry the unique hereditary factor tracking layouts, establishing Chromosome Theory? MCQ with Answer and Explanation

Question

Who discovered that biological chromosomes carry the unique hereditary factor tracking layouts, establishing Chromosome Theory?

A. James Watson

B. Gregor Mendel

C. Walter Sutton and Theodor Boveri

D. Thomas Hunt Morgan

Answer: Option C

Solution (By JKSSB Mock Tests)

Sutton and Boveri independently identified in 1902 that chromosome pairing and separation match Mendelian inheritance laws.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Who discovered ultraviolet radiation in 1801, shortly after Herschel's discovery of infrared?

A. Heinrich Hertz

B. Johann Wilhelm Ritter

C. Wilhelm Röntgen

D. William Herschel

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Correct Answer: Option B

Explanation:
Johann Wilhelm Ritter discovered 'chemical rays' (ultraviolet light) by observing how silver chloride reacted to invisible rays past the violet spectrum.

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Question #2

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The invention of the mechanical printing press was dramatically optimized by Gutenberg using an alloy of which metals?

A. Gold and Silver

B. Iron and Carbon

C. Copper and Zinc

D. Lead, Tin, and Antimony

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Correct Answer: Option D

Explanation:
Gutenberg formulated a specialized type metal alloy that melted at low temperatures but resisted high casting pressures.

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Question #3

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Who discovered Hydrogen gas, which he called 'inflammable air'?

A. John Dalton

B. Antoine Lavoisier

C. Joseph Priestley

D. Henry Cavendish

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Correct Answer: Option D

Explanation:
Henry Cavendish isolated hydrogen gas in 1766 and recognized it as a discrete substance.

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