Assertion: zygote's dna | /r/MadeOf | two-stranded spiral
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Source sentences:
text: Together with the work of Rosalind Franklin and Maurice Wilkins, they determined that DNA is made of two strands of nucleotides formed into a double helix, or a two-stranded spiral, with the sugar and phosphate groups on the outside, and the paired bases connecting the two strands on the inside of the helix (Figure below and Figure below).