TLS Online TPP Program

#Question id: 1959


How do people contract salmonella poisoning?

#Section 2: General Biology
  1. The microbe can survive the acidic environment of the stomach and resist lysosomal degradation in macrophages.

  2. The chemotactic messengers released by the salmonella bacterium do not attract sufficient neutrophils to entirely destroy the infection.

  3. There is a delay in selection of the population of eosinophils that recognize and are responsible for fighting these bacterial infections.

  4. The bacterium releases chemical messengers that make it resistant to phagocytosis.

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TLS Online TPP Program

#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?

TLS Online TPP Program

#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 ?

TLS Online TPP Program

#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?

TLS Online TPP Program

#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 ?

TLS Online TPP Program

#Question id: 4823

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

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

TLS Online TPP Program

#Question id: 4824

#Section 3: Genetics, Cellular and Molecular Biology

If plant with genotype AaBb is test cross where A and B are link at 10 map unit  in trance configuration then the probability of getting AaBB and AaBb genotype respectively?