Which of the following is a dihybrid cross?
a. RrMM ? Rrmm
b. RRMM ? rrmm
c. RrMm ? RrMm
d. rrMM ? RRmm
e. RrMm ? rrmm
C
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Which animal has a gastrovascular cavity?
a. earthworm b. fish c. hydra d. insect e. sponge
If DNA is likened to a ladder, what are the compounds that make up the sides of the ladder?
a. phosphates and bases b. phosphates and sugars c. bases only d. phosphates only e. bases and sugars
If a tree 50 meters (m) high has 30,000 leaves, the surface area of the leaves is 300 m2, and the amount of ground covered by the tree's canopy is 75 m2. The leaf area index (LAI) is
A) 4. B) 6. C) 100. D) 400.
Herbivores are unable to digest ________ and thus rely on the help of specialized bacteria and protozoa living in their digestive tracts
Fill in the blank(s) with correct word