A forensic scientist is trying to find out the number of adenine in the DNA sample that he obtained from a crime scene.
What can he assume about the number of adenine?
The number of adenine will be equal to the number of guanine.
The number of adenine will be equal to the number of all the other bases.
The number of adenine will be equal to the number of thymine.
The number of adenine will be not equal to the number of any other base.

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

Agene editing technology called crispr-cas9 uses cellular machinery to change the cell's genetic material. how might this technology be useful in treating diseases like cancer?

1. -define adaptation2 explain darwin's theories of descent with modification and natural selection in detail3. -explain how each of these provides evidence for evolution: a. -fossil record, including superposition and transitional fossilsb-anatomy, including homologous structuresc-biological molecules, including dna and proteins4. -explain the difference between convergent and divergent evolution.5. -define and give three examples of artificial selection6. -define and give one example of coevolution.7. -explain biodiversity and how it benefits humans.8. -explain a type of population lest affected by environmental change.