If you found 20% thymine in a sample of DNA, how much cytosine would you find? A. 80%
B. 20%
C. you cant be sure without knowing how much guanine is in the sample
D.30%

Why was mendel's work not accepted at the time? o a. his results were false. o b. he did not repeat his experiments. o c. he did not have any data. o d. his results were surprising,

Cathy hypothesized that corn would not grow in mud. to test this hypothesis, she took corn kernels and placed 5 in mud, 3 in soil, and 2 in water. to her surprise, the kernels in the mud grew faster than the kernels in the soil. what error might have caused these unexpected results? a. wrong hypothesis b. not enough variables c. undefined control d. too many variables

In general, characteristics that an organism survive and reproduce become more common in a population over time. what mechanism of evolution cause this change?