In a population of beatles there are green and brown colorations that occur with equal frequency. after a forest fire, only 20 beatles remain. 18 of them are green and two of them are brown. what describes this change in frequency’s

If a strand of dna has 35% thymine. what is the percentage of cytosine, adenine, guanine?

Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a. one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b. one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c. one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.

Match each symbol with its description.