Biology CK-12: Genetic Code

How many codons are known to code for the amino acid threonine?

4

Translation always starts with a(n) ________ codon.

AUG

Genetic information is present in _____.

DNA

The genetic code is a:

Sequence of nitrogen bases

The genetic code is redundant because a single amino acid may be coded for by more than one

codon

_________ are the groups of three nitrogen bases in an mRNA molecule.

codons

The universal code of three-base codons that encode the genetic instructions for the amino acid sequence of proteins is called the germinal code.

false

Redundancy in the _________ _________ allows most amino acids to be encoded by more than one codon.

genetic code

Using the following mRNA sequence and chart, write down the corresponding three-letter abbreviations for the amino acids. Separate each amino acid by a hyphen (eg: "phe-leu-..."). Do not include any spaces. mRNA sequence: AUU-GCA-UCG-AGC-CUA Amino acid sequence: ___

ile-ala-ser-ser-leu

UAA, UGA, and UAG are all ________________ codons.

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