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NEET • BIOLOGY • EVOLUTION
Evolution practice · Hard
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Which of the following is correct sequence of events in origin of life?
(i) Formation of inorganic compounds
(ii) Synthesis of organic monomers
(iii) Synthesis of first simple organic compounds
(iv) Synthesis of organic polymers
(v) Formation of protobiont
(vi) Formation of DNA - based genetic system
(i) Formation of inorganic compounds
(ii) Synthesis of organic monomers
(iii) Synthesis of first simple organic compounds
(iv) Synthesis of organic polymers
(v) Formation of protobiont
(vi) Formation of DNA - based genetic system
View answer and explanation
Correct option: B
(i) (iii) (ii) (iv) (v) (vi)
Option B ((i) (iii) (ii) (iv) (v) (vi)) is correct because it represents the logical sequence of events starting with inorganic compounds, then simple organic compounds, monomers, polymers, protobionts, and finally DNA-based genetic systems.
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Application
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Consider a cat population of 100 , in which 84 are black and 16 are white. Black trait is dominant over white. What will be the number of heterozygotes if this population is in HardyWeinberg equilibrium?
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Correct option: C
48
Option C (48) is correct because it is calculated using the Hardy-Weinberg equation: 2pqN, where N is the population size, p is the frequency of the dominant allele, and q is the frequency of the recessive allele.
Revision notes and key takeaways
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Showing 91-92 of 92 questions