James Watson and Francis Crick?

Question

established the double-stranded nature of DNA.

established the principle of base pairing.

explained how DNA's structure permitted it to be replicated.

proposed the concept of the double-helix.

all of these.


--i know they proposed the concept of the double-helix, but is that it? does anyone know if they also did the other things?

Answer 1

Erwin Chargaff established the principle of base pairing, so the answer is d.

Answer 2

They proposed the concept of the double helix. It was already known that bases paired and that DNA was double stranded. Before then, Watson and Crick constructed an incorrect molecular model of DNA in which the phosphate backbones were on the inside of the structure. After seeing the x-ray crystalography photos of Rosalind Franklin, they determined that DNA was indeed double-helical in shape.

Answer 3

Dr. Michael Newton's books are a ought to envision. the 2nd i think of, "way forward for Souls" explains the alien DNA. He regressed human beings returned previously they have been born (some did no longer comprehend he became into going to try this) to verify what they had to assert as souls. actually everyone has had a prior existence, and a few souls communicate bearing directly to the Earth's history, commencing up as a paradise to bypass to, yet then some stayed. particularly some extraterrestrial beings have come right here, and a few tried to help us or strengthen us, after which you comprehend, some did the deed-particularly some reasons, and that became out truly undesirable for us. The extraterrestrial beings have been very white. i'll make it easier to examine it as a results of fact it truly is exciting. there is plenty extra responded in those books. Take what you will and go away the rest.

Answer 4

Chargaff did the base pairing concept when he measured the amount of C, G, T, and A in a sample.

Answer 5

What?