If you only inherit one mutated copy of BRCA1 and the other copy is normal, you will not develop breast cancer.
Answer the following statement true (T) or false (F)
False
BRCA1 is a tumor suppressor. It takes the loss of both copies of the gene to cause cancer. However, if each cell in the body already has one
mutated copy of BRCA1, the likelihood of another mutation is increased. So, although the development of breast cancer is not guaranteed, it is more likely.
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Rous sarcoma virus was identified when a scientist discovered that a virus passing between chickens was causing their tumors. The genome of this retrovirus includes the src gene, which encodes a tyrosine kinase that functions in signaling pathways leading to proliferation. The src gene is a
A) cyclin. B) proto-oncogene. C) reverse transcriptase. D) tumor-suppressor gene.
Which chemical condition describes the electrons in a water molecule being shared unequally between the hydrogen and oxygen atoms?
A) hydrophobic B) ionic C) noncovalent D) polar
Why is a woman more susceptible to vaginal yeast infections when taking antibiotics?
A) The antibiotic serves as nutrition for the infectious yeast. B) All vaginal bacteria are killed by the antibiotic and can't competitively exclude the yeast. C) Her immune system is already not functioning well due to previous infections. D) Antibiotics are lethal to most types of yeast.
The majority of the staphylococci isolated from human skin are coagulase-positive
Indicate whether the statement is true or false