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Variation in gene frequencies within pop...

Variation in gene frequencies within popu- lations can occur by chance rather than by natural selection
This is referred to as

A

Gene flow

B

Genetic drift

C

Genetic recombination

D

Gene migration

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Variation in gene frequencies within populations can occur by chance rather than by natural selection. This is referred to as

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Variation in gene frequencies within populations can occur by chance rather than by natural selection. This is referred to as Or Random unidirectional change in allele frequencies that occur by chance in all population and especially in small populations is known as

If change in gene frequencies in a population occurs by chance, then it is called as:

Random change in gene/allelic frequency occurring by chance but not under the control of natural selection is called

Gene flow occurs through generations. Gene flow can occur across language barriers in humans. If we have a technique of measuring specific allele frequencies in different population of the world, can we not predict human migratory patterns in pre-history and history ? Do you agree of disagree ? Provide explanation to your answer.

Gene flow occurs through generations. Gene flow can occur across language barriers in humans. If we have a technique of measuring specific allele frequencies in different population of the world, can we not predict human migratory patterns in pre-history and history ? Do you agree or disagree ? Provide explanation to your answer.

Which of the following are incorrect statements? (a)Crossing over during fusion of gametes result in formation of new combination of characters. (b)Natural selection can lead to change in allelic frequencies. (c) According to Lamarck, use and disuse of organs is major driving force behind evolution of life forms. (d)increase in number of heterozygotes[HbA/Hbs]over homozygotes[HbA/HbA or Hbs/Hbs] in malaria prone area is an example of directional selection.

A gene which can occur is more than two alternative forms present on the same locus is called

AAKASH INSTITUTE ENGLISH-TEST 2-EXERCISE
  1. Pattern of bones in forelimbs of humans and wings of bat are an exampl...

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  2. The presence of embryonic features such as tail and gill slits, in the...

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  3. Variation in gene frequencies within popu- lations can occur by chance...

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  4. In the case of peppered moth (Biston betularia) the black-coloured for...

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  5. The tendency of population to remain in genetic equilibrium may be dis...

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  6. When more than one adaptive radiation appeared to have occurred in an ...

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  7. Which among the following is most likely the earliest event according ...

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  8. Data from experimental survey in India suggests that, weight of new bo...

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  9. The most significant change in human evolution is regarded as

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  10. All the finches on the Galapagos islands are

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  11. Inheritance of a acquired characters comes under

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  12. Select odd one out w.r.t. Australian marsupials.

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  13. Given below are four statements (A - D) each with one or more blanks. ...

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  14. Hypothesis of "African origin" of man is based on the study of

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  15. Read the following statements carefully. A. Studies suggest that first...

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  16. Key concepts on which Darwinian theory of evolution is based are

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  17. Which of the following is not correctly matched?

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  18. Big-Bang theory attempts to explain the

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  19. Read the following sentences carefully and choose the option having co...

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  20. Study of history of life forms on earth is known as

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