6. The adjusted R2 is given by

A good question is testable and uses what is known about the experimental organism and the concept investigated to test new ideas about the factors that can result in a change. A good question will always be rooted in prior scientific knowledge, often relating to the evolutionary history of the organism or process. An example of a good question is, “How does temperature affect the rate of cellular respiration?” Because we know that molecules move more rapidly as temperature increases, we can predict that the rate of reactions involved in cellular respiration will increase. An example of a poor question is, “Does the type of music played affect the rate of cellular respiration in germinating peas?” This is because there is no evolutionary reason that peas might respond to say, classical music versus rock music played at the same volume. Using this information as a guide, which of the following would be the most valid scientific question to pose considering the evolutionary history of peas?

Prior to conducting gel electrophoresis, an instructor had her students prepare their own DNA samples using restriction enzymes. The results from one student’s experiment are shown below. What is the most likely explanation for these results?

Prior to conducting gel electrophoresis, an instructor had her students prepare their own DNA samples using restriction enzymes. The results from one student’s experiment are shown below. What is the most likely explanation for these results?

When SAM donates a methyl group, it becomes

You know that alleles are alternative versions of a gene. What makes alleles different from each other?

Folic acid deficiency can cause

A botanist has acquired a group of sweet pea plants. All of the plants have yellow pea pods (the recessive trait), except for one, which has green pea pods (the dominant trait). Pea pod color is a trait caused by a single gene. In this tutorial, you will determine how the botanist can identify the genotype of the green pea pod, and how this relates to Mendel’s laws and meiosis. How could the botanist best determine whether the genotype of the green-pod plant is homozygous or heterozygous?

How do you distinguish vitamin B12 from folic acid deficiency?

When SAM donates a methyl group, it becomes