Which of the following bones in the lower leg has no counterpart in the lower arm?
a. tibia
b. fibula
c. patella
d. tarsals
e. metatarsals
C
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The spread of toxin via circulation is called
A. septicemia. B. bacteremia. C. sepsis. D. toxemia.
A Punnett square is used to determine
a. probable gamete genotypes. b. possible parental phenotypes. c. possible parental genotypes. d. possible genetic outcomes of a cross.
Use of double mutants has been invaluable in studying developmental pathways. In C. elegans, sex is determined by the ratio of sets of autosomes to X chromosomes. A diploid male has one X, and diploid hermaphrodites have two X's
The loss-of-function gene her-1 produces XO worms that are hermaphrodites, but XX worms are unaffected. Mutation of a second gene, tra, causes the XX to develop as male. Given this information, what would be the phenotype of a tra, her-1 double mutant? A) a male nematode B) a female nematode C) a hermaphrodite D) an intersex variant E) lethality
"Red tides" are produced by massive blooms of
A. ciliates. B. green algae. C. dinoflagellates. D. apicomplexans. E. amoebozoans.