ET 3 Which of the following best defines a gene pool? A. the sum of all genetic traits in a population's individuals at a given time
B. any movement of genes from one population to another
C. any movement of organisms from one environment to another
D. the random change in the frequency of an allele in a population

Asnail, elodea (aquatic plant), or both were added to the tubes and they were stoppered. tubes were placed under a grow light for 24 hours and the results recorded. the test tubes were then covered for 24 hours to produce a dark environment and the results recorded. which statement best explains the change in test tube d from the light setup to the dark setup.

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Which best describes a benefit of using dna technology in medicine? a) medicine can be produced in mass quantities. b) medicine can be distributed at a reduced cost. c) medicines have fewer side effects. d) medicines are resistant to antibiotics.