Figure 1 shows part of a DNA molecule.
Figure 1
☐ | A | single helix | |
☐ | B | double helix | |
☐ | C | complementary helix | |
☐ | D | triple helix |
(ii)
Which molecules are present in the DNA backbone?
☐ | A | sugars and phosphates | |
☐ | B | amino acids and bases | |
☐ | C | sugars and bases | |
☐ | D | amino acids and phosphates |
(iii)
State the type of bond that joins the bases together in the DNA molecule.
DNA can be extracted from fruit.
Describe how cells are broken down to release DNA.
In 2003, scientists finished sequencing the 3 billion base pairs in the human genome.
State two benefits that the Human Genome Project could have for medicine.
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