Chihuahuas, Border Collies, and Great Danes (all domestic dogs) descend from the same wolf species and can still interbreed. These varieties were produced by
A) speciation.
B) artificial selection.
C) natural selection.
D) genetic drift.
E) inheritance of acquired traits.
Ans: B) artificial selection.
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A. RU486 B. the rhythm method C. condoms D. birth control pills E. All of these contraceptive methods are equally effective.
Pure water has a pH of 7.0, therefore, ____
a. [H+] < [OH-] b. [H+] = [OH-] c. [H+] = 0 d. [OH-] = 0 e. [H+] > [OH-]
Air masses are deflected to the ________ in the Northern Hemisphere and to the ________ in the Southern Hemisphere
Fill in the blank(s) with correct word
The "total amount of money" earned by a business is to "money earned by regular sales" plus the "extra money earned through increased customers when a business voluntarily performs a community service" as:
a) direct fitness is to the sum of indirect fitness and kin selection. b) alarm calls are to the sum of personal alarm calls and community alarm calls. c) total selection is to the sum of kin selection and reciprocal altruism. d) kindness towards individuals is to the sum of kin selection and indirect fitness. e) inclusive fitness is to the sum of direct and indirect fitness.