If instead of four different bases in DNA and RNA, there were six, what is the minimum size of a codon to encode the 20 amino acids commonly found in proteins? A. 2
B. 4
C. 3
D. cannot be determined
E. 1

Agroup of organisms that changes over time is said to

Which charactistic is a property of water ?

Which claim correctly describes how genes can produce a phenotype? one gene is responsible for all traits. each trait is determined by a single gene. one gene can be responsible for many traits. each gene is responsible for exactly one trait.