There are two forms of human earwax: wet and dry. W is a dominant allele that produces wet earwax. In a sample of Swedes, you measure the following genotypes: WW= 810, Ww =180, and ww = 10 What is the allele frequency of W?
a. 10%
b. 25%
c. 50%
d. 90%
Answer: d. 90%
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If researchers never evaluated the amount of 14C in the atmosphere, they could still use 13C levels to demonstrate causation between human activities and increased atmospheric CO2
A. true B. false
Which of the following is not true of van der Waals interactions?
A. The interaction depends on the distance between atoms. B. Attractive and repulsive forces are balanced at the van der Waals radii for each atom. C. Repulsive interactions arise when atoms are separated by a distance equal to the sum of their combined van der Waals radii. D. Atoms that are farther apart than the sum of their combined van der Waals radii do not experience van der Waals forces. E. All of these statements are true.
Which pest has thrived in urban centers due to their ability to adapt rather quickly?
a. Fruit flies b. Crows c. Mice d. Bacteria e. Rats
The clams, oysters, and mussels belong to this group because of the nature of their shells.
A. bivalves B. slugs C. chitons D. radulas