Isotopes used for providing semi conservative replication of DNA are
Options
(a) N¹⁴ and P³¹ (b) N¹⁴ and C¹⁴ (c) N¹⁴ and N¹⁵ (d) C¹⁴ and P³¹
Correct Answer:
N¹⁴ and N¹⁵
Explanation: […]
Klinefelter’s syndrome has number of chromosomes
Options
(a) 45 (b) 47 (c) 46 (d) 44
Correct Answer:
47
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
Klinefelter’s syndrome is caused
Options
(a) in females lacking one X – chromosomes (b) in females having extra X – chromosomes (c) in males having extra Y – chromosomes (d) in males having […]
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:
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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:
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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 […]
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