The population of American bison used to number in the millions of animals. Hunting and other problems greatly decreased the number of bison to about 1,000 animals. But today, the numbers are recovering to estimates of more than 200,000 animals. This crash in the population of bison and recent recovery is an example of ________.
A. the bottleneck effect
B. gene flow
C. genetic drift
D. the founder effect
A. the bottleneck effect
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Molecular studies have found that the knotted-1 (KN-1) gene normally causes knobby growth
a. True b. False
The process by which a mature embryo sporophyte resumes growth is called ________
a. dormancy b. metabolism c. germination d. development
Human traits are controlled only by the genetic material found in the 46 chromosomes. Indicate whether the statement is true or false
Which of these is not a characteristic of saturated fats?
A) They are liquid at room temperature. B) Every carbon atom is attached to the maximum number of hydrogen atoms. C) Only single hydrocarbon bonds are present. D) They pack tightly together. E) They are found in meat and eggs