Which of the following contributes most to gene flow?

a. adaptation
b. mutation
c. migration
d. environmental variance


c. migration

Biology & Microbiology

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Long interspersed elements (LINES) are a type of 

A. pseudogene. B. proteome. C. exon. D. intron. E. transposon.

Biology & Microbiology

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.

Biology & Microbiology

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

Biology & Microbiology

Small hairlike structures made up of protein on the surface of bacteria are called:a

capsids. b. fimbriae. c. chromatids. d. plasmids. e. virons.

Biology & Microbiology