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Earn 100

Which one of the following is the first step in allopatric speciation?

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Important Questions on Genetics & Organic Evolution

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Choose the wrong statement with reference to subspecies
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Match the following:
  List -I   List -II
(A) Founder effect (I) Long necked giraffes
(B) Bottleneck effect (II) Heterozygous for sickle cell anaemia
(C) Genetic load (III) Pitcairn Island human population
(D) Directional selection (IV) Polydactylic dwarf individuals
    (V) Sunflower population in California

The correct answer is

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Choose the wrong statement with reference to Mutation theory:
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This structural gene synthesizes the mRNA that translates the permease protein
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The selection in a population subject to rapidly changing environments with highly fluctuating food sources is called
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Identify two correct statements from the following
(A) Rennin is industrially produced by Mucor pusillus.
(B) Streptokinase is industrially produced by Pseudomonas putida.
(C) Alkaline serine protease is produced by Bacillus licheniformis
(D) DNA polymerase is produced by Trichoderma reesei.
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Match the following:

  List -I   List - II
(A) Cancer cells (I) DNA replication
(B) Transcriptional factors (II) Saccharomyces
(C) Cyclins (III) Telomerase
(D) Zygote (IV) Totipotent cell
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Which of the following statements are correct?
(A) Diencephalon regulates posture and balance.
(B) Cerebral hemispheres control voluntary movements.
(C) Medulla oblongata regulates involuntary activities.
(D) Cerebellum regulates temperature.