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Aliya1 Aliya1
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Posts: 351
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5 years ago
Hi bio_man. this is a new assignment that i have just begun and i need help. Please get back with me whenever you can.
1. Some Discoveries about DNA
1.DNA is made of deoxyribose sugar, phosphate, and four nucleotides (A, G, C, and T).
2.DNA was originally isolated from white blood cells.
3.X-ray diffraction of the DNA molecules shows that it is a helical structure.
4.Adenine pairs with thymine and guanine pairs with cytosine in any sample of DNA.
5.DNA, not proteins, carries genetic information.
Match the following scientists with their discoveries listed above.

Discovery:
Scientist:
Franklin
Chargaff
Levene
Hershey and Chase

#2. Identify three discoveries listed above that were essential in determining the structure of the DNA molecule by Watson and Crick?
Record your answer in descending (highest to lowest) order.
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7 Replies
Replies
wrote...
Educator
5 years ago
Franklin -- X-ray diffraction of the DNA molecules shows that it is a helical structure.
Chargaff -- Adenine pairs with thymine and guanine pairs with cytosine in any sample of DNA.
Hershey and Chase -- DNA, not proteins, carries genetic information.
Levene  -- DNA is made of deoxyribose sugar, phosphate, and four nucleotides (A, G, C, and T).
Miescher (not in list) -- DNA was originally isolated from white blood cells.

You've listed 4 scientists here. Was that done on purpose? Are we supposed to match the 4 with the 6 options or with just 4?

Get back to me on this one.

Quote
#2. Identify three discoveries listed above that were essential in determining the structure of the DNA molecule by Watson and Crick?

Watson and crick needed to know that:

1st (earliest) DNA is a double-helix: X-ray diffraction of the DNA molecules shows that it is a helical structure.
2nd DNA is made of deoxyribose sugar, phosphate, and four nucleotides
3rd (finally) Adenine pairs with thymine and guanine pairs with cytosine in any sample of DNA.
Answer accepted by topic starter
Aliya1 AuthorAliya1
wrote...
Posts: 351
Rep: 7 0
5 years ago
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wrote...
Educator
5 years ago
So are you content with my answer? What do you think?
Aliya1 Author
wrote...
5 years ago
I have the exact same answer as you  when i did this question Slight Smile
wrote...
Educator
5 years ago
I have the exact same answer as you  when i did this question Slight Smile

Ok, let's close this one, mark it solved.

I'll work on the rest tomorrow
Aliya1 Author
wrote...
5 years ago
Will do, thank you so much. Alright, have a good night Slight Smile
wrote...
3 years ago
thank uyou
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