Gene Splicing - Biorines

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14 Δεκ 2012 (πριν από 4 χρόνια και 7 μήνες)

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DNA Technology

November 7
th
, 2011

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Journal Write


True or False: Mutations are constantly
happening to you RIGHT NOW?
Explain your answer in
atleast

3
complete sentences

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Today you will…


Explain the various types of
genetic engineering


Gene splicing


Recombinant DNA


Cloning


Practice Gene Splicing


Splicing Activity

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Genetic Engineering

Any change in DNA is called a
mutation
.

Sometimes
scientists

cause mutations
for a specific purpose, usually to
benefit society in some way.

This is called

genetic engineering.

Genetic engineering allows humans
to create organisms with desirable
traits.


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TIME OUT

Which of these results when one nitrogen
base replaces another in a segment of
genetic material?

a)
an enzyme substrate

b)
a mutation

c)
a feedback loop

d)
an adaptation



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Gene Splicing

Gene Splicing
: One way of doing this is using
a special type of enzyme that cuts DNA
segments

in a way that allows the segments
to be moved form one organism and attach
to the DNA from a completely new
organism
.

This new DNA is called
recombinant

DNA.

Once that DNA is in the new organism, the
new organism is able to produce new
proteins

which could result in more
desirable traits.


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Gene Splicing Cont.

This image shows the process of
gene
splicing

that creates
recombinant
DNA

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TIME OUT

Scientists can insert and remove nucleotides
from a DNA strand. Which of these
identifies this process?

a)
base pairing

b)
gene splicing

c)
DNA synthesis

d)
DNA transcription



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TIME OUT

In the laboratory, scientists remove the gene for
insulin from human chromosomes. They insert
the gene into the DNA of bacteria. This causes
the bacteria to produce human insulin. The
insulin is used to treat diabetes in humans.
Which of these describes this process?

a)
Meiosis

b)
Fertilization

c)
gene splicing

d)
DNA fingerprinting



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Cloning

Cloning
: a form of
asexual

reproduction where identical genetic
copies are created.

Celebrity Sheep
Died at Age 6

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TIME OUT

When the segment of human DNA that codes
for insulin production is inserted into
bacterial DNA, the bacterium begins
producing human
insulin.Which

of these
best identifies the process by which human
DNA is inserted into bacterial DNA?

a)
gene splicing

b)
crossing
-
over

c)
Mutation

d)
cloning


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Exit Ticket

Most bacteria do not have the ability to break
down oil that is accidentally spilled into the
ocean by tankers. However, scientists can
insert a gene into the DNA of a bacterium to
give it the ability to break down the oil. This
technology is an example of

a)
crossing
-
over

b)
DNA replication

c)
gene splicing

d)
translation