Question

Can Someone Please Answer? THIS IS URGENT!

What was the specific contribution of the following scientists to the DNA story? I would like to have two sentence answers for each.

Francis Crick, Erwin Chargaff, Rosalind Franklin, Linus Pauling, Maurice Wilkins, James Watson.

Answer 1

Somebody PLEASE answer!

Answer 2

do u still neeed help

Answer 3

1. Erwin Chargaff: found a pattern in DNA between the four bases of DNA (adenine, thymine, cytosine, guanine) where A pairs with T (both with same amount) and G pairs with C (both with same amount).
2. Rosalind Franklin & Maurice Wilkins: successfully obtained an x-ray of a DNA molecule which showed its helix shape and used by many other scientists including Crick and Watson.
3. Francis Crick & James Watson: created a double helix model with small rungs connecting both strands which represented the bases (and their pairing) of a nucleotide.
4. Linus Pauling: showed that DNA replication was complimentary (base pairs non covalently paired by a few hydrogen bonds), not similar as suggested by other researchers.

Answer 4

Thanks!!!