Which statement best describes how Watson and Crick's model used other scientists work to create a model of DNA? They used Chargaff's rule to determine that it contains ribose sugar
O They used Franklin's photo to determine that DNA was a double helix.
They used Levene's work to determine the number of base pairs in each strand.
O They used Nirenberg and Matthei's studies to determine that DNA is made of nucleotides.

b.

Explanation:

They used Franklin's photo to determine that DNA was a double helix.

not the best question format lol but what i think might as scale color is controlled by a single gene with two alleles, the green allele and the yellow allele. when moths that are homozygous for green scales are mated with moths that are homozygous for yellow scales, 100% of the offspring have green scales.

the element that provides strength to the exoskeletons of clams and oysters is phosphorus. this is so because calcium carbonate is the main component in the shells.

explanation: