In frogs, a true-breeding female with green skin is crossed to a true-breeding male with yellow skin. All of the F1 offspring have green skin. The F1 female offspring are then crossed to true-breeding males with yellow skin. All of the F2 offspring have green skin. These are observations are consistent with

Select one:
a. maternal effect.
b. genomic imprinting
c. both maternal effect and maternal inheritance.
d. maternal inheritance

What's the waste product of electrons and pyruvate combining in fermentation?  

1. an enzyme is considered a(n) because it speeds up a chemical reaction without being used up.2. in a catalyzed reaction, a reactant is often called a(n) . an enzyme is specific because the shape of its matches only particular reactants.4. an enzyme speeds up reactions by lowering the . the between an active site and its substrate often strains bonds and the reaction proceed.6. a( , which is often a vitamin, binds to an enzyme and plays a role in catalysis.7. high temperatures or changes in ph can an enzyme, causing it to lose its shape and biological activity.

Why are lipids and proteins free to move laterally in membranes?