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#Question id: 4341


Suppose an experimenter becomes proficient with a technique that allows her to move DNA sequences within a prokaryotic genome. If a researcher moves the promoter for the lac operon to the region between the beta galactosidase (lacZ) gene and the permease (lacY) gene, which of the following results would be most likely?

#SCPH28 | Zoology
  1. The three genes of the lac operon will be expressed normally.

  2. RNA polymerase will no longer transcribe permease.

  3. The operon will still transcribe the lacZ and lacY genes, but the mRNA will not be translated.

  4. Beta galactosidase will not be produced.

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

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#Question id: 4822

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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: 4822

#SCPH12 I Genetics

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: 4822

#SCPH28 | Zoology

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

#SCPH06 I Botany

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

TLS Online TPP Program

#Question id: 4823

#SCPH12 I Genetics

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