Chapter 7- Evolution
A hurricane could cause genetic drift by A- Relocating a population to a different habitat B- Randomly killing more individuals of a genotype than another in a population C- Increasing the mutation rate of a population D- Randomly killing more males than females in a population
B
Evolution is the ________ change in a _______ over time. A- Natural; individual B- Genetic; population C- Phenotype; individual D- Genetic; community
B
Similar characteristics found in two species that DO NOT share a recent common ancestor are called... A- Sympatric structures B- Analogous structures C- Homologous structures D- Convergent structures
B
The cause of the continental drift is _____ A- Earthquakes B- the movement of large plates of the Earth's crust C- Volcanic eruptions and rising sea levels D- Any major change in weather
B
The following diagram shows the bone structure of a whale flipper and a bat wing. Which of the following suggests that these two structures are homologous rather than analogous? A- The flipper is formed from the entire front appendage of the wale, but the wing is only formed from the hand part of the front appendage of the bat. B- Both the flipper and the wing contain five fingerlike bone projections. C- The bones that form the five fingerlike projections in the flipper have much thicker bones than the bone that form these projections in the bat. D- The flipper of the whale contains more bones than the wing of the bat.
B
What observations and discoveries first began to change the way people thought about the diversity of life on Earth? A- The fossil record B- Fossils and artificial selection C- Changes due to artificial selection D- Geocentrism E- Bioinformatics
B
Which of the following mechanisms of evolution is the source of all genetic variation? A- Gene flow B- Mutation C- Natural selection D- Genetic drift
B
Who wrote "On the Origin of Species"? A- Franklin B- Darwin C- Crick D- Watson E- Wallace
B
Which statement is true regarding speciation? A- Speciation causes two organisms that appear different interbreed B- Speciation happened in the past but does not occur anymore C- Speciation occurs when one species splits into two or more groups that can no longer interbreed D- Speciation cannot occur through geographic isolation
C
The modern biological approach to classifying life seeks to use formal names only for _____ A- Organisms that live close to one another B- Populations C- Organisms that look similar D- Lineages E- Communities
D
