Briefly describe what a passenger mutation is with respect to cancer genetics

What will be an ideal response?


A passenger mutation is a genetic alteration that does not result in a tumor. It is a mutation that confers a selective advantage to tumorigenesis in the presence of an oncogene.

Biology & Microbiology

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Two dihybrid pea plants (both tall and with purple flowers) are mated. The cross resulted in 9866 progeny, of which 5550 were tall with purple flowers. What are the expected ratios of the other phenotypic classes?

A. 1850 Short/white flower 616 Tall/white flower 1850 Short/purple flower B. 1850 Short/white flower 1850 Tall/white flower 1850 Short/purple flower C. 616 Short/white flower 1850 Tall/white flower 1850 Short/purple flower D. 5550 Short/white flower 5550 Tall/white flower 5550 Short/purple flower

Biology & Microbiology

An antibiotic is added to a culture of E. coli, resulting in death of the cells. Bacteriophage are then added. Would the phage replicate in the E. coli cells? Why or why not?

A. Yes, because the machinery inside the cells is most likely still active, even though the cells are no longer living. The virus could use that machinery to replicate new virus particles. B. No, because the virus would depend too much on having the active machinery of a living cell for its replication. Without the ability of the cell to try to replace what is lost/damaged/used as the virus goes through its life cycle, the virus couldn't reproduce effectively. C. Yes, because viruses are capable of reanimating dead cells to force them to produce more virus particles. D. No, because entry of the virus into the target cell is dependent on the cell being alive to conduct endocytosis of the virus.

Biology & Microbiology

_____ allow ions and small molecules to be quickly transferred between cells

1.Tight junctions 2.Gap junctions 3.Adhering junctions 4.Microvilli

Biology & Microbiology

Chronic dehydration increases a man's risk of developing

What will be an ideal response?

Biology & Microbiology