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
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