An error in the dna checkpoints by dna polymerase during dna replication could pass on to future offspring only if a. the mutation occurred in the gametes. b. the mutation occurred in skin cells. c. the mutation was caused by an environmental mutagen in liver cells. d. mutations caused by dna polymerase won't pass on to offspring.

In each transformation of energy , some energy what?

Which is an example of a vestigial structure? a. tail of a monkey b. fin of a fish c. flower of a plant d. tailbone of a human

Lactase is essential for digesting lactose in milk. this enzyme is specific for this sugar. why? molecules and active sites vary in size; only properly sized molecules can fit.there is a precise compatibility between the active site and the lactose molecule.specificity refers to the action of the enzyme, such as hydrolysis, and relatively few molecules can be hydrolyzed.reaction-specific enzymes assume a fit by folding around the most numerous substrate molecules.