Which of the following is NOT true regarding
guppies of the species Poecilia reticulata?
a. Males are generally smaller than the females.
b. Males are more brightly colored than the
females.
c. Males continue growing after reaching sexual
maturity.
d. The male’s colors serve as visual signals for
mating.
e. They have complex mating rituals.
Answer: c
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Incompatibility in the Rh blood system can result in hemolytic disease of the newborn. Which combination poses the greatest risk?
a. Rh positive mother, Rh negative fetus b. Rh positive father, Rh negative fetus c. Rh negative mother, Rh positive fetus d. Rh negative mother, Rh negative fetus e. Rh positive mother, Rh negative father
The primitive streak is associated with what process?
a. somite formation b. brain formation c. cleavage d. gastrulation e. placentation
What is the function of yolk?
A. Cushions the developing embryo B. Nourishes the developing embryo C. Becomes part of the egg placental membrane D. Provides respiratory surface for the developing embryo E. Connects the maternal and embryonic circulatory systems
Apicoplasts are structures of apicomplexans that
a. provide motility. b. function in transmission. c. serve as resting stages. d. are degenerate chloroplasts lacking pigments.