AP Bio Chapter 18
Which situation would most likely lead to allopatric speciation?
Flood causes the formation of a new lake
What is the main difference between dispersal and vicariance?
One involves closely related organisms, and the other involves only individuals of the same species
Which description is an example of a phenotype?
A mutation occurred to a flower & most cheetahs live solitary lives (B&C)
Which condition is the basis for a species to be reproductively isolated from other members?
It does not exchange genetic information with other species
Which variable increases the likelihood of allopatric speciation taking place more quickly?
Longer distance between divided groups
Which scientific concept did Charles Darwin and Alfred Wallace independently discover?
Natural Selection
Which components of speciation would be least likely to be a part of punctuated equilibrium?
Ongoing gene flow among all individuals
Which term is used to describe the continued divergence of species based on the low fitness of hybrid offspring?
Reinforcement
What is the main difference between autopolyploid and allopolyploid?
The source of the extra chromosomes
Which situation is not an example of a prezygotic barrier?
Two species of insects produce infertile offspring
Which reproductive combination produces hybrids?
When members of closely related species reproduce
Which situation is most likely an example of convergent evolution?
a. Squid and humans have eyes similar in structure. b. Worms and snakes both move without legs. c. Some bats and birds have wings that allow them to fly d. all of the above ANSWER: all of the above
Which of the following situations will lead to natural selection?
a. The seeds of two plants land near each other and one grows larger than the other b. Two types of fish eat the same kind of food, and one is better able to gather food than the other c. Male lions compete for the right to mate with females, with only one possible winner d. all of the above ANSWER: all of the above
