Alternate forms of the same gene are homologs. are alleles. do not exist. are sister chromatids. do not occur in the same individual.

19. scientists use meteorites that hit earth to provide evidence of the composition of earth's interior because they hypothesize that

Which is an example of a vestigial structure? a. tail of a monkey b. fin of a fish c. flower of a plant d. tailbone of a human

What is the main reason that attitudes are more often revealed in spoken rather than written language? a. in writing, we try to put the "best face" on what we write. b. we speak far more often than we write. c. in writing, we can more easily conceal our attitudes. d. in spoken language, we are often careless in our use of words.