Which is the best example of the results of a
neutral mutation?
a. A new wing color evolves that enables a
butterfly to better hide.
b. A new wing color evolves that makes a
butterfly more noticeable.
c. Larger muscles evolve that allow a rabbit to
run faster.
d. A new wing color evolves that doesn’t
affect a butterfly’s ability to hide or make it
more noticeable.
e. Larger eyes develop that enable a rat to see
better at night.
D
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In humans, the majority of a transcription unit is composed of ____
a. exons b. introns c. promoter regions d. start codons e. regulatory elements
If there are four pairs of chromosomes, how many different combinations of chromosomes are possible?
A. 2 B. 32 C. 8 D. 4 E. 16
A man is standing in line behind you, and you notice that he is coughing up bloody phlegm. He seems underweight and fatigued. Which of the following is the most likely diagnosis given the information in this chapter?
A) a cold B) asthma C) tuberculosis D) heart disease
Sulfur has an atomic number of 16. How many covalent bonds can sulfur form?
A) 1
B) 2
C) 4
D) 0