Mrs Harper Biology 22818 February 28 2018 Begin working on Do Now UNIT 4 TEST IS THURSDAY Do Now 22818 What are some causes of mutations What is nondisjunction What are some mutations caused by nondisjunction ID: 779480
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Slide1
Gene Technologies & Scientific Ethical Issues
Mrs
.
Harper
Biology
2/28/18
Slide2February 28
,
2018
Begin working on Do Now
UNIT 4 TEST IS THURSDAY!!!
Slide3Do Now 2/28/18
What are some causes of mutations?
What is nondisjunction?
What are some mutations caused by nondisjunction?
What is a karyotype?
What is an example of a germ mutation?
What is an example of a somatic mutation?
Name one genetic disorder from last night’s homework and briefly describe it.
Slide4CONNECTIONS
What do you think of when you hear the word clone
?
What do you think the term genetic engineering means
?
What does the
word ethical mean?
Genetic copy, genetically identical
To create/design at the genetic level
Morally right or just
Slide5Genetic Engineering
Since the 1980s, scientists have been using
genetic engineering
to produce offspring that show desired traits.
This is done by taking genes from one organism and transferring them into another.
This combined DNA is called
recombinant DNA
.To make recombinant DNA, a human gene is inserted into the plasmid of a bacterial cell. This tells the bacterial cell to produce human proteins like insulin in large quantities.
Slide6REASONS FOR GENETIC ENGINEERING
To improve
crop plants
to resist damage from frost, insect pests, plant diseases and herbicides.
For
selective breeding
(like cattle breeders selecting for animals that produce more milk)
For medical purposes, like to produce needed proteins, make medicines and treat disease
Slide7Cloning
Cloning produces a multicellular organism that is genetically
identical
to the parent
This is done by removing the
nucleus
of an egg cell and then injecting a donor nucleus, which produces a
fused cell.
Slide8Cloning
The cell eventually becomes an embryo and is placed inside a
host mother
.
This is called
reproductive cloning
.
In 1997, the first mammal was cloned. She was a sheep named Dolly.
Slide9Reasons for Cloning
To produce more individuals of an
endangered
species
To clone organisms with the most desirable traits
Therapeutic cloning
to obtain cells for research or to treat diseases
Human cloning is believed by many to be unethical.
Slide10STEM CELL RESEARCH
As we grow and develop our cells
differentiate
into specific types, like brain cells or heart cells
Stem cells
are undifferentiated, unspecialized cells.
The hope is that stem cells can treat injuries and diseases in which normal differentiated cells have
died
. Controversial, because some believe using the stem cells of human embryos is unethical.
Slide11DNA FINGERPRINTING
No two
fingerprints
are exactly the same
Can be used to determine how closely
related
individuals are
Used during crime investigations
Used to exonerate (clear) the names of people who were falsely convicted
Slide12EOC Practice
-Ethical issue means it may be morally wrong.
-Which poses the greatest risk?
Slide13EOC Practice
-DNA is your genetic identity
Slide14EOC Practice
-Letter C does NOT fit in with the other choices and is incorrect
Slide15Assignment
Complete the worksheet questions silently and independently on Code Red
In about 5-10 minutes, we will begin the video the answer those aligned questions.
Unfinished classwork is homework
UNIT 4 TEST IS THURSDAY!
Slide16Video
Answer the questions in the homework packet as we watch the video about the first animal that was cloned.
We are on
CODE RED
.
https://www.youtube.com/watch?v=tELZEPcgKkE