ViTtOSIS Experiment 3: The Importance of Cell Cycle Control Data 2. 3. 5. Post-L
ID: 152232 • Letter: V
Question
ViTtOSIS Experiment 3: The Importance of Cell Cycle Control Data 2. 3. 5. Post-Lab Questions 1. Record your hypothesis from Step 1 in the Procedure section here. 2. What do your results indicate about cell cycle control? 3. Suppose a person developed a mutation in a somatic cell that diminishes the performance of the body's natural cell cycle control proteins. This mutation resulted in cancer, but was effectively treated with a cocktail of cancer-fighting techniques. Is it possible for this person's future children to inherit this cancer-causing mutation? Be specific when you explain why or why notExplanation / Answer
Solution :
1]Importance of cell cycle control
Checkpoints
As the cell progresses through the cycle, checkpoints are encountered. Although not absolutely essential for cell division they are well-established features of most cells.DNA damage detection and repair facilities and a system that detects unreplicated DNA and, in mitosis, a system to ensure adequate spindle assembly and chromosome attachment
Therapy
Cancer is about cells dividing in an unregulated way. The nature of the cell cycle control system lends itself to the design of anti-cancer drugs that disrupt the cell cycle and initiate programmed cell death.
Quality Assurance (QA), Quality Control (QC)
A system that controls the cycling of the cycle and ensures the cell only enters the next phase when passage through the previous one is complete; also that the phases of the cell cycle are entered in the correct order. Satisfactory passage through all four phases and usually the various checkpoints of the cell cycle are critical for cell division (QC).
Internal Security
A control system that initiates and terminates chemical reactions in the cell cycle and,ensuring that DNA is replicated once and once only during S phase(maintanance of ploidy levels).
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3]Mutation in Somatic cells
For mutation that actually leads to cancer,to pass onto the next generation the mutation should occur in the germ line cells and not the somatic cell.This is because the germ cells are the only cells which carry the genomic information to the next generation.Hence if the mutation is in the germ cells(egg/sperm)then there is a sure posibility of the mutation being carried onto the next generation.
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