What gene must be expressed in a Drosophila for it to develop into a female fly?
A. SRY
B. Hox
C. SXL
D. sex-1
C
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Gene rearrangement is responsible for the generation of the various antibody molecules
Indicate whether this statement is true or false.
In which of these flower parts does meiosis
take place?
a. calyx b. corolla c. stigma d. anther e. style
Small doses of ionizing radiation over a long period of time cause less damage because
a. they are too low to affect cells. b. they don't hit as many targets. c. the body has time to repair damaged DNA. d. the radiation is absorbed by macrophages. e. the radiation is absorbed by red blood cells.
Like humans, cats can experience kidney failure. Unlike humans, however, cat kidney dialysis as a treatment option is not widely available and used. Rather, efforts are made to treat any complications that arise from failing kidneys such as low potassium
or high phosphate levels. When low potassium levels are identified, potassium supplements are given to return cells to a balanced potassium-water level. This is an example of an effort to maintain A) osmoregulation. B) thermoregulation. C) convection. D) evaporation.