Genetics Lesson 3.

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Presentation transcript:

Genetics Lesson 3

NGSS LS1.A: Structure and Function All cells contain genetic information in the form of DNA molecules. Genes are regions in the DNA that contain the instructions that code for the formation of proteins.

Key Vocabulary DNA Chromosome Gene Exon Intron Helicase RNA Polymerase RNA (mRNA, tRNA, rRNA) Amino Acid Peptide Polypeptide Protein Structure (1°, 2°, 3°, 4°)

DNA Structure

Coding and Non-Coding DNA

Central Dogma: DNA → RNA → Protein

Degeneracy of the Genetic Code

Protein Structure

Complimentary DNA (#1-6) G T A T C A G

mRNA from DNA (#7-12) A T G C G A C T Remember: in RNA, A pairs with U instead of T A T G C G A C T

Identify mRNA codons (#13-16) G U C A G U C

Amino Acid sequence from mRNA codon sequence (#17-21) G C Met His Cys Pro Phe Ala Asp