Chapter 13 Flashcards
Which of the following is the most recent example of evolution and natural selection?
The development of pesticide-resistant insects
If the frequency of one allele in a population is 0.7, what is the frequency of the alternate allele?
0.30
Natural selection can be defined as ____
a process in which organisms with certain inherited traits are more likely to survive and reproduce than individuals with other traits
The first basic idea of evolutionary adaptation can be traced back to _____
Lamarck
Which of the following is an example of directional selection?
There is an increase in antibiotic-resistant strains of bacteria
Sickle-cell disease is caused by _____
a recessive allele
The similarity of the embryos of fish, frogs, birds, and humans is evidence of ____
common ancestry
Evolutionary biologists studying the evolution of lizard horn length found ______
that lizard horn length evolved as a defense mechanism against predators
While on the Beagle, Darwin was influenced by a book by Charles Lyell that suggested that Earth was ____ and sculpted by geologic processes that ____ today.
old…continue
Which of the following is likely to be the result of polygenic inheritance?
human height
Which one of the following can create new alleles?
mutation
Genetic drift is the result of ____
chance
Which mechanism for evolution was proposed by Lamarck?
Evolution by inheritance of acquired characteristics
In the Hardy-Weinberg formula, what does 2pq represent?
frequency of heterozygotes
What do we call scientists who study fossils?
Paleontologists
The total collection of alleles in a population at any one time make up that population’s ____
gene pool
What does evolutionary fitness measure?
relative reproductive success
Which of the following is an example of natural selection that has been seen in our lifetime?
the evolution of antibiotic-resistant bacteria
The original source of genetic variation that serve as the raw material for natural selection is ____
mutation
Which of the following is an example of sexual selection?
Peahens choose to mate with peacocks that have the most beautiful tails
The study of comparative anatomy _____
provides information about the evolutionary history of species
Which one of the following was an assumption of Charles Darwin’s theory of natural selection?
Populations produce more offspring than their environment can support
Which of the following are homologous?
The forelimb of a dog and the forelimb of a cat
Which one of the following is the study of the geographic distribution of species on Earth?
Biogeography
