How many nucleotides are needed to specify FOUR amino acids? A) 12
B) 8
C) 4
D) 16

What form of anesthetic was used for field surgery

Ihave no idea how to solve these. plus there's another question that is 2) a 10 kilogram meteorite is collected in space and brought back to earth. it is composed of 1.25 kg of uranium-238 and 8.75 kg of lead-206. how many u-238 half lives have passed? what is the approximate age of the meteorite?

Plz ! what does it mean for an allele to be dominant?