The plural for genus is
a. genus.
b. geni.
c. genera.
d. gena.
e. genae.
ANSWER: c
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The primary advantage of gills versus the body surface for gas exchange in aquatic animals is that ________.
A. gills are located near the mouth B. gills have a much greater diffusion surface area C. gills decrease resistance to movement D. all gills contain a countercurrent exchange system
Active transport can only move a substance with a concentration gradient
1.True 2.False
Which of the following is most likely to increase the risks of ASD?
A) poor parenting B) exposure to environmental chemicals during pregnancy C) vaccination with the MMR vaccine D) all of the above
The phenotype of an organism can best be determined by:
a) true-breeding. b) a reciprocal cross. c) sequencing its genes. d) observing the organism. e) inbreeding.