Who discovered the fundamental genetic mechanism of 'jumping genes' (transposons) in maize? MCQ with Answer and Explanation

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Who discovered the fundamental genetic mechanism of 'jumping genes' (transposons) in maize?

A. Barbara McClintock

B. James Watson

C. Thomas Hunt Morgan

D. Rosalind Franklin

Answer: Option A

Solution (By JKSSB Mock Tests)

Barbara McClintock discovered genetic transposition in the 1940s and received an unshared Nobel Prize in 1983.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Who discovered that malaria parasites mature within the gastrointestinal tract of Anopheles mosquitoes, winning a Nobel Prize in 1902?

A. Charles Laveran

B. Louis Pasteur

C. Sir Ronald Ross

D. Robert Koch

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Correct Answer: Option C

Explanation:
Sir Ronald Ross proved the vector transmission cycle of malaria while working in Secunderabad, India.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2

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The invention of the common mechanical pencil sharpener layout with internal planetary gears was patented by whom?

A. Christopher Sholes

B. Nicolas Conté

C. John Lee Love

D. Walter Hunt

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Correct Answer: Option C

Explanation:
African-American inventor John Lee Love patented the simple, functional portable mechanical sharpener layout ('Love Sharpener') in 1897.

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Question #3

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The first modern steam locomotive, 'Rocket', was built by which engineer?

A. Richard Trevithick

B. Thomas Newcomen

C. James Watt

D. George Stephenson

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Correct Answer: Option D

Explanation:
George Stephenson and his son Robert built the 'Rocket' in 1829, setting the standard for future steam railways.

This question belongs to: Static General Knowledge Inventions and Discoveries

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