What determines the sequence of the mRNA codons?

If jane has the blood type ab and marries john who has type o blood what are the possible phenotypes of their first kid?

What goes in and out of a cell respiration?

Abird flies by moving its wings up and down. which two systems are most directly responsible for the movement of a bird's wings? a. skeletal and muscular systems b. respiratory and muscular systems c. skeletal and digestive systems d. respiratory and digestive systems