Which form of reproduction in protists is associated with a protective, resting cyst stage?
a. transverse binary fission
b. longitudinal binary fission
c. sexual reproduction
d. budding
c. sexual reproduction
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In cells of human individuals with three or more X chromosomes
a. one X chromosome remains active and the rest are inactivated. b. all of the X chromosomes remain active. c. two X chromosomes remain active, and any more are inactivated. d. two X chromosomes remain active in females and one remains active in males; the rest are inactivated. e. only one X chromosome is inactivated.
Peacocks are males and peahens are females of a sexually dimorphic species. How could you test whether a peacock's tail was an important cue for peahen egg production?
A) Relate size of male tail to female tail. B) Remove tails from females and measure corresponding egg production. C) Remove tails from courting males and measure corresponding female egg production. D) All of the above answers apply. E) A and C are equally good answers
Low-growing, hardy plants of the ____________________ occur at high latitudes, where there is a layer of ____________________.
Fill in the blank(s) with the appropriate word(s).
Lipid A causes disseminated intravenous coagulation (DIC)
Indicate whether the statement is true or false