hot topics in genetics what is genetics you may ask? the study of how traits are passed along
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Turn in your homework. hot Topics in Genetics What is Genetics you may ask? The study of how traits are passed along. Brainstorm with the student next to you to come up with a list of interesting topics that are related to genetics or DNA. Write that list on both your RP s . - PowerPoint PPT PresentationTRANSCRIPT
hot Topics in Genetics What is Genetics you may ask?
The study of how traits are passed along.
Brainstorm with the student next to you to come up with a list of interesting topics that are related to genetics or DNA.
Write that list on both your RPs.Who will have the best list?
Turn inyourhomework
RP: on your old RP . . Answer this question:
It was gorgeous this weekend, tell what you did outside (please say you went outside) that was exercise. Then tell why exercise is good for your circulatory system.
Today in Science ! Introduction to Genetics Two column Notes
Notebooks . . .• They will be turned in Monday.• Be sure to do fill in your “student
evaluation” on your rubric.• The Peer evaluation can be done first
thing on Monday.Lizards and pythons and newts, oh no!
Notes – NB# 4 of new notebook
Write the topic in the left, listen to lecture then write one sentence summarizing what you thought was interesting.
There will be some questions to answer also. There are about 6 hot topics that we will
discuss. These are HOT topics. I picked them because they are engaging. AND yes, you will get to talk to each other about each topic . . .but please wait ‘till it is your turn.
Hot topicsA. Genetic Disorders
1. Progeria is a genetic disorder causedby a mutation in the DNA that has occurred in 1 in 4 million children.
http://en.wikipedia.org/wiki/ProgeriaVideo clip
Don’t call out the name of this next genetic disorder please!
“These funny little creatures are _______ Pygmy Marmoset monkeys, born at the Froso Zoo in Ostersund, Sweden this week.” Daily Mail 8/06
What word goes in the blank?
albino
2. Albinism
• Lack of the pigment melanin. Skin is without color. Eyes look pink. Do you know why?
• Albinism can be the result of a mutation of the DNA or can be inherited from parents.
Normal Pygmy Marmoset monkeys
http://www.dailymail.co.uk/pages/live/articles/news/news.html?in_article_id=402067&in_page_id=1770
http://blogs.discovermagazine.com/discoblog/2010/12/08/a-creepy-monster-of-the-forest-the-albino-vampiric-redwood-tree/
http://blogs.discovermagazine.com/discoblog/2010/12/08/a-creepy-monster-of-the-forest-the-albino-vampiric-redwood-tree/
On your notes add this question and write an answer
Can plants be albino? Describe why or why not
3. Downs Syndrome
• Another Genetic Disorder caused by an extra chromosome.
Genetic Disorders ..continued
More Hot Topics
B. Selective Breeding
• “The process of selecting a few organisms with desired traits to serve as parents of the next generation.”
• What are some plants or animals that you might predict have undergone selective breeding? Talk to a partner.
Labradoodle You want a nice family dog that is good with
kids but you really hate sheeding dog hair. So you mix a lab and a poodle.
• Tomato• http://www.riverdeep.net/current/2002/04/042902t_gmfoods.jhtml
• http://www.teachersdomain.org/resource/tdc02.sci.life.gen.breeding/
Regular Cows
Super CowsSelectively bred for muscle
• http://video.msn.com/video.aspx?mkt=en-us&vid=740e8f1b-0c90-4b1b-b8c8-0ea69baa9e7b• http://www.eatnineghost.com/super-cow/• ..\..\Documents and Settings\AHA16998\Desktop\pc86_Meet_the_Super_Cow.mp4• 3:28 – 4:00
..\..\..\..\Common\Video Stream\pc86_Meet_the_Super_Cow.mp4
1st stopped
In Summary . . .
Write one question you still have.
Write a one sentence summary of how selective breeding works.
C. Genetic Modification
• Changing the DNA of an organism by Scientifically inserting DNA segments into the chromosomes.
Controversial Selective Breedingdesigner babies
little persondeaf person
Add this question and your opinion to your notes:Should parents be able to “design” a
baby that has the same disability as they have?
Speaking of controversy …how about cloning?
On your Notes write and anwer this:
I think that cloning is ____________________
What is cloning?
D. Cloning is making an exact copy
What do you already know about clones?Any asexual reproduction process
results in a “clone” cause DNA is identical. Examples: budding, binary fission, rooting
a.k.a.Somatic cell nuclear transfer . . .
• Dolly the sheep is most famous clone. • There were 277 attempts before it worked.• 1 cell from sheep A mammary gland with the
nucleus (and DNA) removed.• This nucleus was put into an unfertilized egg cell
from another sheep.• This cell was then inserted into a surrogate sheep.• Dolly died prematurely.
Dolly’s life
Life span for a sheep is generally 12 years. At 5 she developed arthritis and then lung disease. Dolly “died” when she was 6.
Dolly had at least 4 of her own lambs.
E. Stem Cell Research
• Stem cells are those early cells that have not differentiated (become a bone, skin whatever cell).
GPS for our study of Genetics• S7L3 Students will recognize how
biological traits are passed on to successive generations.
• S7L3a Students will explain the role of genes and chromosomes in the process of inheriting a specific trait.
• S7L3c Students will recognize that selective breeding can produce plants and animals with desired traits.
In Closing . . .Read over your notes
3 hot topic titles Questions I still have
The most interesting part of today’s discussion.
In Closing . . .Read over your notes
sentence summary that describes how ‘selective breeding can produce organisms
with desired traits’. Questions I still have
The most interesting part of today’s discussion.
Balderdash . . . .
Rules: Keep your voices down – you do not want other
groups to hear your definitions.Figure out ways to convince them that your
made up definition is the right one.We will not give the correct answer till the end.One definition can be funny, but we’ll know not
to pick it probably.Your made up defs.can not be correct.