GPB MCQ Quiz 164 for ICAR JRF/SRF/ARS Exam Preparation

The control of hereditary disease especially inborn error of metabolism is dealt by

A) Cytogenetics

B) Euphenics

C) Eugenics

D) Mendelian genetics

Explanation: Euphenics involves interventions to reduce the effects of hereditary diseases, especially inborn errors of metabolism.

A combination of deoxyribose sugar and nitrogenous base is called

A) Nucleotide

B) Nucleoside

C) Both

D) None

Explanation: A nucleoside consists of a nitrogenous base bound to a sugar (deoxyribose in DNA).

Components of DNA are

A) Nitrogenous base and nucleoside

B) Nucleoside and phosphate group

C) Deoxyribose sugar and phosphate group

D) Deoxyribose sugar and nitrogenous base

Explanation: DNA is composed of a sugar-phosphate backbone (deoxyribose and phosphate) and nitrogenous bases forming the rungs of the double helix.

The theory "only those organs of the body developed well which were in great use over long period of time and those organs which were not in use became reduced and finally disappeared" was formulated by

A) Linnaeus

B) Lamarck

C) Darwin

D) Mendel

Explanation: Lamarck proposed the theory of use and disuse, suggesting that organs developed or diminished based on their usage.

The condition "Jolap" is found in

A) Rice

B) Mustard

C) Maize

D) Sugarcane

Explanation: Jolap is a genetic condition or trait observed in maize.

Theory of germplasm stated

A) All of the above

B) i

C) ii

D) iii

Explanation: Weismann's germplasm theory states that somatic cells cannot influence germ cells, and germplasm is responsible for reproduction; all listed points are part of this theory.

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