Transcript Aim: What factors affect the expression of the gene?

 HAPPY THURSDAY 
Bellwork: Write down the following question and highlight
the key words in the question and answer.
The mold Aspergillus flavus grows on grain. A. flavus produces
a toxin that binds to DNA in the bodies of animals that eat the
grain. The binding of the toxin to DNA blocks the process of
transcription, so it directly interferes with the animal’s ability to
do which of the following?
a)Transport glucose across the cell membrane
b)Produce ATP using energy released from glucose
c)Transfer proteins from the endoplasmic reticulum to the Golgi
complex
d)Send mRNA from the nucleus to the ribosomes
QUESTION: What factors affect
the expression of the gene?
Temperature & Gene
Expression
Water level affects the size of the
leaves.
Leaves above water are broad, below the water-level are
finely divided
pH affects color.
Acidic soil produces blue flowers and Alkaline soil
produces pink.
• A
Stem cell differentiation.
What is cancer?
Uncontrolled cell growth.
Twin Studies
What is the genetic make up of identical
twins?
What have we found out about the
expression of the genes in twins?
http://www.pbs.org/wgbh/nova/body/epige
netics.html