Long Answer Type
Short Answer TypeLong Answer TypeHow did Hershey and Chase differentiate between DNA and protein in their experiment while proving that DNA is the genetic material?
1. The two chains are spirally coiled about around a common axis to form a regular, right-handed double helix.
2. The double helix has a major groove and minor groove alternately.
3. The helix is 20 A wide; its one complete turn is 34 A long, and has 10 base pairs ; and the successive base pairs are 3.4 A apart.
4. The two chains are complementary to each other with respect to base sequence.
5. The two strands are hydrogen bonded : A on one chain is joined to T on the other chain by hydrogen bonds; C on one chain is linked to G on the other chain by 3 hydrogen bonds.
6. The two strands run in antiparallel direction.
7. The amount of A + G = the amount of T + C; the amount of A = the amount of T : the amount of G = the amount of C. Sugar and phosphate groups occur in equal proportion.
8. The DNA molecule is remarkably stable due to hydrogen bonding hydrophobic reactions.
9. The DNA molecule can replicate and repair itself, and can also transcribe RNAs.
10. The amount of DNA per nucleus is constant in all the body cells of a given species.
Make a table showing genetic codes and the corresponding amino acids coded by genetic codes.
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