The Genetic Code and Genes

Question 1

Genetic Code

Answer 1

The DNA and mRNA sequences that determine the amino acid sequences used in an organism’s proteins

• Triplet code
• Degenerate code
• Punctuated code
• Non-overlapping code
• Universal code

Question 2

Triplet code

Answer 2

Known as a Codon, a group of three bases codes for one amino acid

Question 3

Degenerate code

Answer 3

More than one codon codes for an amino acid

Question 4

Punctuated code

Answer 4

• The first codon of a gene is always AUG and is known as the start codon
• There are stop codons that end translation

Question 5

Non-overlapping code

Answer 5

Each base in a sequence is only read once

Question 6

Universal code

Answer 6

Same codons code for the same amino acids in all species

Question 7

Gene

Answer 7

Sequence of DNA that codes for a polypeptide

Question 8

Introns

Answer 8

Non-coding regions on a DNA strand (They are removed during transcription)

Question 9

Exons

Answer 9

Coding regions on a DNA strand

Question 10

Eukaryotic Genes

Answer 10

Discontinuous (Both Introns and Exons)

Question 11

Prokaryotic Genes

Answer 11

Continuous (Exons only)