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#Question id: 3313


Which one of the following statement is incorrect for the process of speciation?

#Section 3: Genetics, Cellular and Molecular Biology
  1. Parapatric speciation may occur when, the population is continuous, population does not mate randomly due to long distance.

  2. Allopatric speciation may occur between geographically separated populations.

  3. Peripatric speciation is a mode of speciation in which a new species is formed from an geographically isolated population

  4. Sympatric speciation may also have been common in fish due to preferred microhabitat within same range

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#Question id: 4817

#Section 3: Genetics, Cellular and Molecular Biology

How many different gametes can be formed by an organism with genotype AaBbCCddEe, If a, b and c gene are completely link?

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#Question id: 4819

#Section 3: Genetics, Cellular and Molecular Biology

Plant with genotype AB/ab is test cross, two genes are linked are 10 map units apart. What proportion of progeny will have the genotype aabb?

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#Question id: 4820

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following gametes are produced in grater proportional by an individual of genotype Ab/aB if the genes are in the same chromosome with some recombination between them?

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#Question id: 4821

#Section 3: Genetics, Cellular and Molecular Biology

What are frequency of recombination  if one cell carry out cross over every 50 cell undergoes meiosis ?

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#Question id: 4822

#Section 3: Genetics, Cellular and Molecular Biology

In a particular species of mammal black hair (B) is dominant to green hair (b) and red eyes (R) are dominant to white eyes (r). If a BbRr individual is mated with a bbrrindividual the expected phenotypic ratio of the offspring is 1 black-red : 1 black-white: 1 green-red : 1 green-white. However, when you mate these individuals you find that the phenotypic ratio of the offspring is 6 black-red :1 black-white : 1 green-red : 6 green-white. What could account for this difference?

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#Question id: 4823

#Section 3: Genetics, Cellular and Molecular Biology

Which one of the following DNA markers can be used to distinguish between a homozygote and heterozygote ?