The least common type of skin cancer mentioned in the text, but the one that must be taken most seriously, is ________
Fill in the blank(s) with correct word
melanoma
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Assume that the mutation rate for a given gene is 5 × 10?6 mutations per generation. For that gene, how many mutations would be expected if 10 million sperm are examined?
A) none B) 5 × 10?6 C) 5 D) 50 E) 500
What is the relationship between topoisomers?
What will be an ideal response?
You have isolated a mutant in which a fraction of the new cells die soon after cell division and a fraction of the living cells have an extra copy of one or more chromosomes
When you grow the cells under conditions in which they transit the cell cycle more slowly, the defect disappears, suggesting that the mitotic spindle and segregation machinery are normal. Propose a basis for the defect.
Please choose the statement that best describes the immunologic basis of organ or tissue rejection after transplantation.
A) Specific T cell populations recognize non-self MHC molecules on transplanted tissue and mount a cell-mediated immune response damaging the transplant. B) Transplanted tissue is normally rejected only if it becomes infected. C) Organ/tissue transplant rejection is mostly due to Type 2 cytotoxic reactions mediated by IgG and IgM. D) IgE antibodies as well as basophils and mast cells attack the transplanted tissue if they recognize it as "non-self."