What leads paleontologists to hypothesize that whales evolved from wolf-like carnivores?
A) molecular analysis of whale DNA
B) observations of fossil teeth
C) the presence of vestigial structures in both species
D) mathematical analysis using the Hardy-Weinberg formula
B
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The organism that has been most commonly associated with human disease, particularly in patients who are immunocompromised, such as those infected with human immunodeficiency virus (HIV), is:
a. Rhodococcus. b. Gordonia. c. Tsukamurella. d. Streptomyces.
The relationship between the clownfish and the sea anemone it is associated with is an example of mutualism
Indicate whether the statement is true or false
Which description fits the molecule in this diagram?
a. triacylglycerol
b. artificially hydrogenated trans fat
c. polyunsaturated fatty acid
d. amphipathic phospholipid
Which of these muscle components is the smallest?
A) Muscle fiber B) Myofibril C) Myosin filament D) Skeletal muscle