Which of the following evolve?
a. populations only
b. genera only
c. kingdoms only
d. both populations and genera
e. populations, genera, and kingdoms
ANSWER: a
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The duplication of homeotic (Hox) genes has been significant in the evolution of animals because it _____
A) permitted the evolution of novel forms B) caused the extinction of major groups C) reduced morphological diversity into simpler forms of life D) allowed animals to survive on significantly fewer calories
The gene pool of the next generation is derived from
A. all individuals of a population. B. only the female members of a population. C. those individuals of a population that reproduce and have viable offspring. D. individuals who are heterozygous for the genes in question. E. only the male members of a population.
Flimmer filaments
A. function to move cells on solid surfaces. B. are components of all eukaryotic flagella. C. permit flagella to pull rather than push the cell. D. None of the choices are correct.
Bones are important in balancing which mineral in the body?
1.sodium 2.potassium 3.iron 4.magnesium 5.calcium