Question

Q41. The non-histone proteins which hold the sister chromatid pairs of chromosomes during

metaphase are:

(a) Cohesins (b) Condensins

(c) Topoisomerases (d) Nucleoplasmin

Q42. In n-hybrid cross the number of phenotypic and genotypic classes are:

(a) 1n and 2n

respectively (b) 2n and 3n

respectively

(c) 3n and 2n

respectively (d) 2n and 4n

respectively

Q43. Pisum sativum has 2n = 14 chromosomes, the number of linkage group in it will be:

(a) 7 (b) 14

(c) 21 (d) 28

Q44. In a nucleotide the base is linked to the:

(a) 1/ -position of a sugar (b) b. 2/ -position of a sugar

(c) 3/ -position of a sugar (d) 5/-position of a sugar

Q45. In prokaryotes initiation of transcription requires:

(a) TATA box and core polymerase (b) Sigma factor and RNA pol I

(c) Sigma factor and core polymerase (d) Sigma factor and RNA pol I & II

Q46. Isobilateral leaves are usually:

(a) Astomatic (b) Hypostomatic

(c) Epstomatic (d) Amphistomatic

Q47. In dicot root cork cambium originates from:

(a)Pith (b) Hypodermis

(c) Pericycle (d) Endodermis​

Answer 1

Answer:

Explanation:

in Q41 non histone proteins are condensins                      In Q42 no of phenotypic and genotypic classes are 2n and 4n