Which of the following contributes most to gene flow?
a. adaptation
b. mutation
c. migration
d. environmental variance
c. migration
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Long interspersed elements (LINES) are a type of
A. pseudogene. B. proteome. C. exon. D. intron. E. transposon.
Changes that have occurred in living organisms over the past four billion years are due primarily to
A. extinction of species. B. continental drift. C. changes in geological periods. D. interaction of genetic and environmental changes. E. the change in the orbit of the moon, causing mass extinction due to volcanic activity.
Plastics that wash into waterways cause problems mainly because they:
a. clog gills of fish b. are mistaken for food by marine animals c. are unsightly d. leach toxins e. disturb water flow patterns
Small hairlike structures made up of protein on the surface of bacteria are called:a
capsids. b. fimbriae. c. chromatids. d. plasmids. e. virons.