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Bell Ringer: What is mutation? How does this impact cell division, DNA replication, mitosis and meiosis? . DNA: The Blueprint of Life. Replication. Phosphate Sugar ( Deoxyribose ) Nitrogenous Base. 1. 3. 2. A. C. A. G. C. G. G. A. C. A. G. C. T. T. T. C. C. T. G. G.

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Presentation Transcript
slide1

Bell Ringer: What is mutation? How does this impact cell division, DNA replication, mitosis and meiosis?

slide2

DNA:

The Blueprint of Life

slide5

Phosphate

Sugar (Deoxyribose)

Nitrogenous Base

1

3

2

A

C

A

G

C

G

G

A

C

A

G

C

T

T

T

C

C

T

G

G

slide6

Question 1. What is the sequence of each strand of DNA?

Question 2. What is the complimentary sequence?

Top Sequence: GACGATTGACComplimentary: CTGCTAACTG

Bottom Sequence: CTGCTAACTGComplimentary: GACGATTGAC

slide8

Replication:

Process by which a cell makes a copy of the DNA in its nucleus

http://www.youtube.com/watch?v=hfZ8o9D1tus

slide10

mRNA (messenger RNA): RNA that copies the coded message from DNA in the nucleus and carries the message into the cytoplasm.

Phosphate

Sugar (Ribose)

Nitrogenous Base

1

3

2

Question 3. Is mRNA single-stranded or double-stranded?

Question 4. What are 3 differences between DNA and RNA?

slide11

Question 5. What is the mRNA sequence?

GACGAUUGA

Question 6. What is the sequence of the template DNA?

CTGCTAACT

Why does sequence matter?

slide12

Genetic Code:Order of nitrogenous bases that specifies what type of protein will be produced.

Gene: Segment of DNA that codes for a protein

Genetic Code

ACT

C T A

C T G

Gene

slide13

Transcription:

Process by which information on a strand of DNA is copied into a strand of mRNA.

http://www.dnatube.com/video/3450/DNA-Transcription

slide15

Genetic Code

ACT

C T A

C T G

Question 7. What would the mRNA sequence be?

GAC GAU UGA

GAC

GAU

UGA

Codon: Sequence of three nucleotides that encodes a specific amino acid.

slide16

Protein Synthesis

Question 8. Where does replication take place?

Question 9. Where does transcription take place?

Question 10. Where does protein synthesis take place?

slide17

mRNA attaches to the ribosome, where protein synthesis begins.

Transfer RNA: RNA in the cytoplasm that carries an amino acid to the ribosome and adds it to the growing protein chain.

slide18

Attached amino acids become a protein chain.

Question 11.

How many bases make a codon?

mRNA read in ‘triplicate’- 3-letter codes of bases specific for an amino acid

slide19

Convert DNA sequence to mRNA.

Use the chart to match codons to amino acids.

GAC GAU UGA

2. Val Val STOP

ACT

C T A

C T G

slide20

Translation:

The process by which a protein is synthesized from the information encoded on an mRNA strand.

http://go.distance.ncsu.edu/animations/proteinsynthesis/