A mutation in the promotor region of a gene can result in cancer. Which of these scenarios results in cancer?
a. The mutation is in the promoter region for an enzyme that metabolizes starch, such as amylase. Starch digestion is disrupted.
b. The mutation is in the promoter region for a protein that controls rebuilding of the telomeres. As a result, these cells die prematurely.
c. The mutation is in the promoter region for a protein that controls a key gate-keeper in the cell cycle. Without the gate-keeper, the cell blows through that checkpoint and continues with growth, unchecked.
d. The mutation is in the promoter region for a calcium channel in the cell membrane of bone cells. The result of the mutation is a buildup of excess calcium in the extracellular space.
c. The mutation is in the promoter region for a protein that controls a key gate-keeper in the cell cycle. Without the gate-keeper, the cell blows through that checkpoint and continues with growth, unchecked.
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S. pyogenes associated with invasive disease characteristically have
A. leukocidins. B. coagulase. C. streptococcal pyrogenic exotoxin A. D. streptococcal pyrogenic exotoxin B. E. streptococcal pyrogenic exotoxins A AND B.
There are three alleles controlling the ABO blood
types. IA and IB are codominant genes so that the combination IAIB produces the AB blood type. The third allele, IO, is recessive to the other two alleles. Indicate which of these parents could produce the given child:Parents Child Yes or No (a) A x AB B (b) A x O A (c) A x B O (d) A x AB O (e) A x AB B (f) B x B O (g) AB x AB A What will be an ideal response?
During which process does the shedding of the endometrium occur?
A) menstruation B) intercourse C) ovulation D) fertilization
The fact that certain nucleotide templates are more readily amplified than others is termed ________.
A. analytical PCR B. real-time PCR C. multiplex PCR D. PCR bias