Mutations are ____
a. always bad for populations
b. always good for populations
c. always harmful for individuals
d. the basis of homogeneity in a population
e. the basis of variability among individuals
e
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Diets high in fat and carbohydrates affect inbred lines of mice differently. One line becomes obese and the other does not. This is called a ____ interaction
Fill in the blank with the appropriate word.
Organisms that undergo asexual reproduction
a. produce offspring that are identical to each other and to the parent. b. are usually very complex. c. do not require energy to reproduce. d. produce offspring that are different from each other. e. require another organism to reproduce.
An atom or molecule with an electrical charge is a(n)
A. isomer. B. isotope. C. ion. D. neurotransmitter. E. acid.
Which of the following would NOT be evidence that mitochondria were once prokaryotic?
a. similarities of mitochondrial ribosomes and bacterial ribosomes a. similarities of mitochondrial ribosomes and bacterial ribosomes b. negative effects of antibiotics on mitochondria c. DNA similarities of mitochondria and free-living bacteria d. the presence of a circular chromosome e. presence of a nucleus within mitochondria