Gentics And Evoloution - Study Mode

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[#201] The number of DNA molecules per chromatids are

(A) one

(B) two

(C) three

(D) four

Correct Answer

(B) two

[#202] Recently, who among the following succeeded in synthesising a nucleic acid molecule of six nucleotide units?

(A) Orgel

(B) S. Fox

(C) Francis

(D) Haldane

Correct Answer

(A) Orgel

[#203] Big-Bang theory attempts to explain the origin of

(A) earth

(B) solar-system

(C) universe

(D) continents

Correct Answer

(C) universe

[#204] Match List-I with List-II and select the correct answer: List-I List-II a. Monohybrid cross 1. Involves the study of inheritance of two pairs of contrasting characters b. Dihybrid cross 2. Involves two crosses concerning the same character but with reversed sexes c. Polyhybrid cross 3. Involves the study of inheritance of one pair of contrasting characters d. Reciprocal cross 4. Includes those crosses in which inheritance of more than two pairs of genes is concerned

(A) a-3, b-1, c-4, d-2

(B) a-1, b-2, c-3, d-4

(C) a-4, b-1, c-3, d-2

(D) a-1, b-3, c-4, d-2

Correct Answer

(A) a-3, b-1, c-4, d-2

[#205] Which of the following suggests that at every level from the molecule through the supramolecular organelle, the cell, the tissue, the organism, the individualand upto the population or the society, the properties of life depend only to a small degree upon the substances of which living matter is composed?

(A) Concept of speciation

(B) Concept of variation

(C) Concept of organization

(D) Concept of heredity

Correct Answer

(C) Concept of organization