Your body makes NAD and FAD from two B vitamins, niacin and riboflavin. The recommended dietary allowance
for niacin is 20 mg daily and for riboflavin, 1.7 mg. These
amounts are thousands of times less than the amount of
glucose your body needs each day to fuel its energy needs.
Why is the daily requirement for these vitamins so small?

Imagine that a mouse has white fur because of a mutation in its dna. which of the following conclusions can be drawn

The phylogenetic tree illustrates the relationship between humans and our closest living relatives. the tree was based on biochemical comparisons, including dna and amino acid sequences. according to the biomolecular data, we could infer that a) the four organisms do not have a common ancestor. b) humans are more closely related to chimps than any other apes. c) chimps are more closely related to gorillas than they are to humans. eliminate d) there is no evidence if any relationship between the four branches on the tree.

What function does the limb sever in each animal? how are the limb bones of the four animals similar? based on these similarities what can be inferred about the evolution of the four animals.