AMCB 6 Exam Questions with Correct Answers
AMCB 6 Exam Questions with Correct Answers Xeroderma pigmentosum (XP) - Answer-Rare autosomal recessive disease Extreme sensitivity to UV light People with XP have defective nucleotide excision repair pathways Cockayne Syndrome - Answer--Another DNA repair deficiency like XP -Characterized by photosensitivity, premature aging, neurological symptoms, and early death -Defect in transcription-coupled repair -Said to arise from RNA pol molecules permanently stalled at sites of DNA damage that lie in important genes Mutations become apparent - Answer-only after cell division; yielding 1 WT and 1 mutant cell Point mutation - Answer-(missense, nonsense, silent): change of base pair caused by: rep mistake, chemically alt base that mispairs Deletion mutation - Answer-removal of one or more base pairs in the DNA caused by: intercalating chemicals, DNA Pol slips, mobile genetic elements Insertion mutation - Answer-insertion of one or more bases caused by: intercalating chemicals, mobile genetic elements Frameshift mutation - Answer-deletion or insertion of a number of bases that cannot by divided by 3
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amcb 6 exam questions with correct answers
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