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#Question id: 4343


Suppose an experimenter becomes proficient with a technique that allows her to move DNA sequences within a prokaryotic genome. If a researcher moves the repressor gene (lacI), along with its promoter, to a position at some several thousand base pairs away from its normal position, which of the following results would be expected?

#SCPH01 Biochemistry
  1. The repressor will no longer bind to the operator.

  2. The repressor will no longer bind to the inducer.

  3. The lac operon will be expressed continuously.

  4. The lac operon will function normally.

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TLS Online TPP Program

#Question id: 14964

#SCPH05 I Biotechnology

The resistance of the tubercle bacillus to various factors is probably due to its

TLS Online TPP Program

#Question id: 14966

#I Life Science/ Life Sciences Group – I-V

The bacterial cell wall is composed of a macromolecular network called peplidoglycan (also known as murein) which is present either alone or in combination with other substances

TLS Online TPP Program

#Question id: 14966

#SCPH05 I Biotechnology

The bacterial cell wall is composed of a macromolecular network called peplidoglycan (also known as murein) which is present either alone or in combination with other substances

TLS Online TPP Program

#Question id: 15006

#SCPH12 I Genetics

Which of the following is not a mechanism for sex determination?

TLS Online TPP Program

#Question id: 15007

#SCPH12 I Genetics

You set up a cross between true breeding wild type male fruit flies and true breeding female flies with a yellow body color. You notice in the F1 generation that half the flies, specifically all the males, have yellow body color while the females are wild type (gray). Which of the following explanations is the most likely?

TLS Online TPP Program

#Question id: 15008

#SCPH12 I Genetics

You have a white eyed, male fruit fly with vestigial wings and a wild type female known to be heterozygous for both traits. You know that vestigial is located on an autosome. What is the probability that a mating between these two flies will generate a female offspring with vestigial wings and white eyes?