31. This diagram shows an important concept in the genetic implication of DNA. Fill in the blanks A to C
(1) A- translation B-trancription C- Erevin Chragaff
(2) A- translation B-translation C- Francis Crick
(3) A- translation B-extension C- Rosalind Franklin
(4) A- transcription B-replication C- James Watson
32. If two persons with ‘AB’ blood group marry and have sufficiently large number of children, these children could be classified as ‘A’ blood group: ‘AB’ blood group: ‘B’ blood group in 1:2:1 ratio. Modern technique of protein electrophoresis reveals of both ‘A’ and ‘B’ type proteins in ‘AB’ blood group individual. This is an example of:
(1) Incomplete dominance
(2) Partial dominance
(3) Complete dominance
(4) Codominance
33. A pregnant female delivers a baby suffers from stunted growth, mental retardation, low intelligence quotient and abnormal skin.
This is the result of
(1) Low secretion of growth hormone
(2) Cancer of thyroid gland
(3) Over secretion of pars distalis
(4) Deficiency of iodine in diet
34. The process of which organisms with different evolutionary history evolve similar phenotypic adaptations in response to a common environmental challenge, is called
(1) Convergent evolution
(2) Non radiant evolution
(3) Adaptive radiation
(4) Natural selection
35. Infection of Ascaris usually occurs by:
(1) eating imperfectly cooked pork
(2) Tse-tse fly
(3) mosquito bite
(4) drinking water containing eggs of Ascaris
36. The Air Prevention and Control of Pollution Act came into force in
(1) 1981
(2) 1985
(3) 1990
(4) 1975
37. Which group of animals belong to the same phylum?
(1) Earthworm, Pinworm, Tapeworm
(2) Prawn, Scorpion, Locusta
(3) Sponge, Sea anemone, Starfish
(4) Malarial Parasite, Amoeba, Mosquito
38. Isogamous condition with non flagellated gametes is found in
(1) Spirogyra
(2) Volvox
(3) Fucus
(4) Chalmydomonas
39. Menstrual flow occurs due to lack of
(1) FSH
(2) Oxytocin
(3) Vassopressin
(4) Progesterone
40. Pigment containing membranous extensions, in some cyanobacteria are
(1) Basal bodies
(2) Pneumatophores
(3) Chromatophores
(4) Heterocysts
Answers
31. (2) A- translation B-translation C- Francis Crick
32. (4) Codominance
33. (4) Deficiency of iodine in diet
34. (1) Convergent evolution
35. (4) drinking water containing eggs of Ascaris
36. (1) 1981
37. (2) Prawn, Scorpion, Locusta
38. (1) Spirogyra
39. (4) Progesterone
40. (3) Chromatophores
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