The three natural processes that underlie evolution are genetic variation, inheritance, and ________

Fill in the blank(s) with correct word


natural selection

Biology & Microbiology

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Which of the following would be most effective and practical for routine home disinfection of a toothbrush between uses?

A. Hydrogen peroxide B. 70% Isopropyl alcohol C. Bleach D. Glutaraldehyde

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In Glacier Bay, one of the first species to colonize a newly exposed area of glacial till is fireweed. You would predict that fireweed is a(n) _____-selected species

A. r B. K

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Germ layers are

A. layers infected with bacteria. B. embryonic layers with different developmental potentials. C. layers of cells surrounding the egg prior to fertilization. D. colonial protists arranged in layers. E. layers of gametes.

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The simplest viruses consist of ________.

A. RNA only B. RNA or DNA in a protein coat covered with lipid envelope C. protein only D. RNA, DNA, and enzymes in a protein coat with a lipid envelope E. RNA or DNA in a protein coat

Biology & Microbiology