Identify 2 things that can cause mutations

A. Damaging effects of radiation

B. Death

C. Mis-Copying

D. Exact copy of healthy DNA.

What is the main source of energy in a clear-water stream in an open area?

5 sentences that you know about genetics

Which statement best describes cancer cells? A. They grow as a single layer of cells. B. They cease to reproduce after 20-50 mitotic divisions. C. They reproduce only when needed to replace missing cells. D.

How long were simple microsocpic organisms the only life forms on earth?

What is the question that Maria and Elena want to answer by performing an experiment?

What might happen to a plant that has a genetic mutation that results in shorter roots

Does a window air conditioner pull air from outside

Which of these properties of a star best determines its life cycle? density temperature brightness mass

How many codons are needed for one amino acid?

1) which structure regulates breathing rate in humans? A) diaphragm B) lungs C) hypothalamus D) medulla 2) the first forms of life on earth A) appeared about 10,000 years ago B) could easily maintain a stable internal environment C) were