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

Folic acid deficiency can cause

SAM is originated from the reaction of

The MTHFR (677C/T) polymorphism