GATE Biotechnology Question Paper 2004 with Answers.
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GATE Biotechnology Question Paper 2004 with Answers
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A cell in G1 of interphase has 12 chromosomes. How many chromatids will be found per cell during melaphase II of meiosis?
(A)6 (B)12 (C)18 (D)24
Diploid Drosophila has eight chromosomes. Which one of the following terms should NOT be used to describe Drosophila with six teen numbers of chromosomes?
(A) Polyploid (B) Aneuploid (C) Euploid (D) Tetraploid
Hydrated synthetic seeds which are produced by ion exchange reaction involve mixing the somatic embryos in a solution of
(A) sodium alginate and dropping it in a solution of calcium nitrate
(B) calcium alginate and dropping it in a solution of sodium nitrate
(C) calcium alginate and dropping it in a solution of ammonium nitrate
(D) mannitol and dropping it in a solution of sodium nitrate
Shoot organogenesis by tissue culture results into
(A) a bipolar structure that has no vascular connection with the explant
(B) a monopolar structure that has a strong connection with the pre-existing vasculartissue of the explant
(C) a monopolar structure that has no vascular connection with the explant
(D) a bipolar structure that has a strong connection with the pre-existing vascular tissue of the explant
‘Hairy roots’ induced in vitro by the infection of Agrobacterium rhizogenes, are characterized by
P. a high degree of lateral branching Q. genetic instability of culture R. an absence of geotropism S. poor biornass production
(A) P and R only (B) P and Q only
(C)Q and R only (D)R and S only