By using ratios. You get a punnet square and then get the ratio or even the percentage.
Answer:
I think she should try the experiment one set with fertilizer, and one without. The negative control group would be the set of rose bushes grown without the fertilizer, but under the exact same conditions as the experimental group. Then, if a difference is seen you can be sure it's accurate, since you tested with and without fertilizer under the same conditions. Sorry if i am wrong, I am not completly sure about this one. Again I might be wrong so sorry in advance.
The correct answer is
B. bases in DNA in the nucleus
The short sequences of characters that appear and can be
seen at the end of a filename preceded by a period is filename extensions. While
a sequence structure is a set of statements that execute in the order they
appear.
