Chapter 11

Which of the following is not part of natural selection? a. environmental resources b. differences in traits c. neutral mutations d. competition among individuals

The number of species on an island depends on the size of the island and its distance from a mainland. This statement would most likely be made by______. a. an explorer b. a biogeographer c. a geologist d. a philosopher

The bones of a bird's wing are similar to the bones in a bat's wing. This observation is an example of _______. a. uniformity b. evolution c. comparative morphology d. a lineage

Evolution is______. a. natural selection b. change in a line of descent c driven by natural selection d. b and c are correct

If the half-life of a radioisotope is 20,000 years, then a sample in which three-quarters of that radioisotope has decayed is _______ years old. a. 15,000 b. 26,667 c. 30,000 d. 40,000

______has/have influenced the fossil record. a. Sedimentation and compaction b. Tectonic plate movements c. Prevailing belief systems d. a and b

Evidence suggests that life originated in the ______. a. Archaean b. Proterozoic c. Phanerozoic d. Cambrian

Forces of geologic change include ______ (select all that are correct) a. erosion b. fossilization c. volcanoes d. evolution e. tectonic plate movements f. wind g. asteroid impacts h. hot spots

Through _____ a body part of an ancestor is modified differently in different lines of descent. a. analogous structures b. homologous structures c. morphological convergence d. morphological divergence

Homologous structures among major groups of organisms may differ in _____. a. size b. shane c. function d. all of the above

Some mutations are neutral because they do not affect______. a. amino acid sequence b. nucleotide sequence c. the chances of survival d. body form

\(13,\) By altering steps in the program by which embryos develop, a mutation in a ______ may lead to major differences in body form between related lineages. a. coprolite b. homeotic gene c. homologous structure d. all of the above