Lecture (sept 30), DNA transcription start

Question 1

What does the promoter do on a gene?

Answer 1

regulates gene expression, a flag for the RNA Polymerase to know where to sart coding

Question 2

What are the 2 main components of a gene?

Answer 2

Promoter and Coding sequence

Question 3

Where is the promoter found?

Answer 3

Upstream to the coding/protein region (closer to the 5’ area)

Question 4

What is the +1 site?

Answer 4

transcriptionWhere the RNA polymerase starts laying down start site,

Question 5

What is the start codon?

Answer 5

AUG (applies 90% of time)

Question 6

What is the stop codon?

Answer 6

TAG, TGA, TAA

Question 7

What is the miportance of the -10, -35 and -50 elements?

Answer 7

Places for the RNA polymerase to latch on to

Question 8

What is the -10 element?

Answer 8

TATAAT *remember TATA box

Question 9

What is the -35 element

Answer 9

TTGACA

Question 10

What does Uracil REPLACE

Answer 10

thymine

Question 11

What is a gene?

Answer 11

Gene is a segment of DNA which controls a discrete hereditary trait, characteristic or
phenotype