Lac operon (ZYA genes) was proposed by Jacob and Monod in the year
Options
(a) 1900 (b) 1961 (c) 1990 (d) 1896
Correct Answer:
1961
Explanation:
Jacob and Monod proposed Lac operon in […]
Ligase is an enzyme required for
Options
(a) breaking of DNA (b) joining DNA segments (c) renaturation DNA (d) proof reading of DNA
Correct Answer:
joining DNA segments
Explanation:
DNA ligases are used […]
Linkage was discovered by
Options
(a) Miller (b) Morgan (c) De Vries (d) Mendel
Correct Answer:
Morgan
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
Masking the character of one gene by other gene is known as
Options
(a) epistasis (b) atavism (c) pseudoalleism (d) none of these
Correct Answer:
epistasis
Explanation:
Epistasis is the phenomenon by which […]
Mendel did not observe linkage due to
Options
(a) mutation (b) synapsis (c) crossing over (d) independent assortment
Correct Answer:
independent assortment
Explanation:
No explanation available. Be the first to write the explanation […]
Mutations caused by mutagenic agents are termed as
Options
(a) spontaneous mutations (b) induced mutations (c) chemical mutations (d) chromosomal mutations
Correct Answer:
induced mutations
Explanation:
No explanation available. Be the first to […]
Number of (approximately) genes in E. coil are
Options
(a) 4000 (b) 6000 (c) 10000 (d) 18000
Correct Answer:
6000
Explanation:
No explanation available. Be the first to write the explanation for this […]
Operon model for regulation of transcription was proposed by
Options
(a) Meselon and Stahl in 1998 (b) Jacob and Monod in 1961 (c) Waston and Crick in 1951 (d) none of the above
Percentage of recombination between A and B is 9%, A and C is 17%, B and C is 26%, then the arrangement of genes is
Options
(a) ABC (b) ACB (c) BCA (d) […]
Persons who are colour blind can not distinguish?
Options
(a) green & blue (b) red & green (c) yellow & white (d) black & yellow
Correct Answer:
red & green
Explanation:
No explanation […]
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