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Stack #28239 Word Scramble

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Created by: doomngloom

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Evidence of Evolution

Person/s	Discoveries
Griffith	trying to prepare pneumonia vaccine, bacteria enclosed in a capsule (S colonies) that protects them from body's defense system- making them virulent, bacteria not in capsule (R colonies) weren't harmful, discovered transformation through experiments.
Avery	demonstrated that DNA is the material responsible for transformation.
Watson and Crick	determined DNA molecule is double helix, determined purine on one strand pairs w/ pyrimidine on other, A with T, C with G, 2 strands that contain complementary base pairs, one strand of DNA serves as a template or pattern on which other strand is built.
Chargaff	for each organism studied, the amount of A always equaled the amount of T and the amount of C always equaled the amount of G, and the amount of A, T, C, and G varies in different organisms.
Wilkins & Franklin Photographs	high-quality X-ray diffraction photos of strands of DNA, suggest DNA molecule resembled tightly coiled molecule made of 2 or 3 chains of nucleotides.