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What is the purpose of the ice cold ethanol during the DNA extraction experiment?

If a man has blood type O and his wife has blood type AB, what blood types are possible among their children?

One of the assumptions of the Hardy-Weinberg equations is that mating is at random in the population.

Fur color is a heritable trait for mice.

Wilhelm Weinberg was a German mathematician.

DNA forms hydrogen bonds with complementary bases to create a double stranded molecule that is anti-parallel in its directions. 

DNA is only found as a single standed molecule.

What bones make up hind limb between the coxofemoral joint and the hock? [Answer1] [Answer2] [Answer3]

When naming muscles, what word is used to describe straight muscle fibers?