Agenda

• SEL

• ICE BREAK

• WARM-UP

• Questions Review

• Lecture

• Review

• ​Exit Ticket

All living things must have DNA or a genetic code.

• DNA is a molecule called a nucleic acid

• DNA can come in various forms such as chromatin or chromosomes

• DNA contains the directions for how the organism operates

​Characteristics of DNA

​•DNA is shaped like a twisted ladder, which is called a double helix. 

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•The sides of the ladder are made of sugar and phosphate molecules, while the rungs are made of nitrogen bases (adenine, thymine, cytosine & guanine).

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•A always bonds with T and C always bonds with G.  This is called the principle of base pairing.

​What happens during Trasncription?

​• Transcription is the process of converting the DNA code into an mRNA message.

• The DNA template is easy to follow because of the base-pairing rule.

• Whenever the DNA sequence contains A, however, a uracil (U) is made rather than a T.

SUMMARY

•The genetic information of the cell is encoded in the nitrogen bases of DNA molecules.  This code can be used to form proteins through the processes of transcription and translation.