Question 1 of 30
1 point
who is best known for collecting the first images of dna molecules?
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a. frederick griffith
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b. archimedes
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c. al-razi
d. rosalind franklin

What is the tychonic system? a. a model of the solar system in which all the planets (including earth) orbit the sun b. a model of the solar system in which the planets, moon, and sun orbit earth c. a model of the solar system where the planets orbit the sun, and this system orbits earth d. a model where all the planets and earth are fixed in space and only the sun and moon move e. a model that expands the system to a vast number of galaxies and star systems