BIO 206 CH:13

What is a codon?

• A sequence of 3 RNA nucleotides

• A single RNA nucleotide

• A sequence of 5 RNA nucleotides

• A sequence of 2 RNA nucleotides

Which of the following is a start codon?

• AUG

• UAA

• UAG

• UGA

What does a nonsense codon do?

• Does not code for an amino acid

• Specifies an amino acid

• Initiates translation

• Codes for methionine

What is the role of an anti-codon?

• Complementary to codon in mRNA

• Codes for an amino acid

• Initiates protein synthesis

• Stops protein synthesis

Who was involved in cracking the genetic code in the 1960s?

• Marshall Nirenberg

• James Watson

• Francis Crick

• Rosalind Franklin

Which codon specifies the amino acid Methionine (Met)?

• AUG

• UAA

• UAG

• UGA

Tags

NGSS.HS-LS1-1

Which of the following is a stop codon?

• UAA

• AUG

• GCU

• GAA

What is the characteristic of the genetic code that involves one codon consisting of three nucleotides?

• Triplet code

• Degenerate code

• Non-overlapping

• Wobbling

Tags

NGSS.HS-LS1-1

Which codon is an exception in yeast and vertebrate mitochondria, coding for Methionine instead of Isoleucine?

• AUA

• UGA

• CUU

• AGA

What does ORF stand for in the context of genetic coding?

• Open Reading Frame

• Overlapping Reading Frame

• Open Ribosome Frame

• Overlapping Ribosome Frame