Andalusian chickens show incomplete dominance for feather color. a cros between a white bird and a black bird produces mostly blue feathers. a cross between two f1 blue chickens produces mostly blue chickens. are the blue chickens purebred?

No, They are not purebred

Explanation:

Incomplete dominance mean that the two alleles does partial dominance over each other leading to a brand new trait being expressed ( blue feather). In addition, there was no allele representing or coding for blue feather  from the beginning of the generation; blue feather was only the result of the interaction of the partially dominant alleles of white feather and black feather.

plato users

given bodies of water

pacific / arctic / indian / southern

[ a ] the caribbean sea

[ b ] the northern ocean

[ c ] the atlantic ocean

[ d ] the barents sea

with this being the given answers

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.