The double-helix structure of DNA was discovered using X-ray crystallography (Rosalind Franklin) and elucidated by Watson and Crick.
Before this discovery, it was previously known that DNA is comprised of
four nucleotide bases: adenine, thymine, guanine, and cytosine. Adenine
always binds to thymine, while guanine always binds to cytosine.
You analyze a double-helix and determine that 17% of the helix is made up
of the nucleotide adenine (A). What percentage of the same helix must be
comprised of the nucleotide guanine (G)?

Melissa lives in a town called greendale. she discovers that when she lights a match and holds it near her kitchen faucet, the little flame grows into a larger fire. melissa is surprised because she thought the water would extinguish the flame rather than ignite it further. her mother tells her that the water might be contaminated with dissolved methane, a primary component in natural gas. melissa investigates the matter and finds that cases of methane contamination started shortly after a company began fracking for natural gas in the area. based on this information, which three statements are plausible consequences of fracking in greendale?

Name one similarity and one difference between the morphology of a brachiopod and a bivalve

Which part of cellular respiration must occur before any of the other steps can occur