Question

The photo that I attached is the photo that you'll be following to answer the questions. PLZ help? Anyone? Will greatly appreciate it.

1) What two substances make the backbone of the DNA molecule?

2) Are the backbones of the DNA molecule identical in all living things?

3) Are the base pairs always the same?

4) If there were five guanine bases in one strand of your model of DNA, how many cytosine bases would there be in the complementary strand?

5) If there were 10 bases of thymine in one strand of your model of DNA, how many adenine bases would there be in the complementary strand?

6) If the DNA molecule is so similar among all living things (the pairings are always the same and that there are only six components that make up DNA), why is there so much diversity of life?

Answer 1

1. Phosphates and sugars (deoxyribose)
2. yes
3. the order of the bases aren't but what they pair with are
4. five
5. ten
6. the sequences vary between all organisms