45 Aresearcher is studying a certain protein of interest, Sal3, which has been i

Question

45 Aresearcher is studying a certain protein of interest, Sal3, which has been isolated from two strains of bacteria, Strain E and Strain J. The researcher identifies Sal3 via a western blot and discovers that Sal3 from Strain E is the expected molecular weight but Sal3 from Strain J is shorter. Amino acid sequencing confirms that the Sal3 from Strain J contains fewer amino acids. Which of the following best explains this result? A. Strain Eunderwent a conservative missense mutation in the open reading frame coding for Sal3. B. Strain E was allowed to grow for a longer time in culture than Strain J. C. Strain J could have undergone a nonsense mutation only, in the open reading frame coding for Sal3. D. Strain J could have undergone either a nonsense or frameshift mutation in the open reading frame coding for Sal3.

Explanation / Answer

ANSWER:

45) Strain E underwent a consecutive missensemutation in the open reading frame coding for sal3

50) Except failure to ovulate in women

54) MEIOSIS II: In humans, the only cells that have a single copy of the genome are gametes, formed during meiosis. Cells have a single unreplicated copy of the genome after the 2nd meiotic division.

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