What is meant by a gene knockout?
What will be an ideal response?
The designed loss of a specific gene in order to study its function. This is often accomplished in the context of a conditional knockout, where the gene is affected in some tissue types but not others, allowing genes to be studied for which complete loss would be lethal.
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Which of the following are incorrectly matched for a single-factor cross?
A. P generation / true breeding B. F1 generation / monohybrid C. F2 generation / result of F1 cross D. F1 generation / result of P cross E. F2 generation / result of P cross
Organisms that use CO2 as their source of carbon are called
A. organotrophs. B. heterotrophs. C. autotrophs. D. chemotrophs.
The amino acid targets of protein kinases in all GPCR pathways are ____
a. serine and glycine b. serine and tyrosine c. serine and threonine d. glycine and tyrosine e. glycine and threonine
True or False: There are safe and effective HIV-2 vaccines available, but because HIV-1 has such high genetic variability, the vaccines are of little use to prevent AIDS
a. TRUE b. FALSE