Download GummiBearGenetics

COOL GENETICS FACTS
 If the total DNA in one person were laid in a straight line, it
would stretch to the sun and back over 600 times.
 Humans are 99.9% identical – only 0.1% of our genetic
makeup differs.
 One in ten cats in New England has six or seven toes on
each paw.
BUT…. Everyone is different enough that we can still tell each
other apart… when the police are looking for bad guys, they can
check for DNA at the crime scene and match it to one single
individual.
Mutations make us different from one another, so we all have
them – unless we have twins in here… then they have a lot of the
same mutations.
So… in your groups, get together and decide what’s different
about each of you. I want you to come up with three things that
you all have differences in and one thing that you all share.
Explain the difference between hair length kinds of things and
colour of hair…ENVIRONMENT vs GENETICS
Now I have some for you to try…
Tongue Rolling, Detached Earlobes, Hitchhiker’s Thumb
Widow’s Peak, Dimples, Blue Eyes, PTC Paper
So WHY do some of us have these abilities and others not???
Usually it’s based on something called Inheritance…
Anybody know what inheritance is???
Explain Using Gummy Bears… Dominant, Recessive Two copies
Possible Combinations: Red and Red
=
Red and Yellow
Yellow and Yellow =
(write these on the board)
*** Gummy Bear Worksheet!!!
Red
=
Red
Yellow
GUMMY BEAR GENETICS
*Remember that each gummy bear can only have TWO (2)
genes… One from MOM and one from DAD.
1.
IF dad has two yellow genes and mom has two red genes,
what will the baby bears get?
_____________________________________
2.
IF dad has one red and one yellow gene and mom has two
red genes, what will the baby bears get?
From Dad? ________ From Mom? ____________
What colour will the baby bears be? _____ Why?
_______________________________________
3.
IF dad has two yellow genes and mom has one red and one
yellow gene, what will the baby bears get?
From Dad? ________ From Mom? ____________
What colour will the baby bears be? _____ Why?
(*hint remember that red is dominant over yellow)
The Big Problem
Father Bear (Yellow/Yellow), Mother Bear (Red, Yellow)
Son Bear is RED, Daughter Bear is YELLOW
Son marries RED bear and has 3 Red babies and 1 Yellow
Q1: What does this tell us about the son’s wife?
Daughter has two Yellow babies and one Red.
Q2: What does this tell us about the daughter’s husband?
Find out which genetics number you are!
See what number everyone in your family is. Get a group of your friends
together and see what numbers they are.
*Start* in the center of the circle with: "if you have hair on your fingers
between your fingernails and your knuckle"... answer "yes" or "no".
Then, "if your hair comes to a widows 'peak' in the middle of your
forehead"... answer "yes" or "no".
Then, "if your earlobes dangle" (a part hangs free from your face)...
answer "yes" or "no".
Next, "if you can roll your tongue"... answer "yes" or "no".
And finally, "if your hair is curly"... answer "yes" or "no".
That's the number you are! Try it out!
See how many different numbers come up!
GENETICS TRIVIA:
TEAMS DIVIDED… ALL GIVEN THE SAME QUESTIONS…
PENALTY SHOOT-OUT
THERE WILL BE SIX QUESTIONS, TEAM 1 answers first on
the first one, then team 2 on the second, etc
1. What do we inherit from our parents that determine our
physical characteristics. ANSWER = GENES
2. What is weird/odd about cats in New England?
ANSWER = 10% have more than five toes
3. What type of trait is the Widow’s Peak? ANSWER =
DOMINANT
4. Hair Length is not determined by Genetics, what type of
trait is it? ANSWER = ENVIRONMENTAL
5. If all your DNA was spread out in a straight line, how
many times could it go to and from the Sun? ANSWER =
over 600 times
6. Where is DNA located? ANSWER = in your CELLS
TIEBREAKERs (nominate one person each and fastest
answer wins)
Where did [Volunteer’s Name] do his University degree?
ANSWER [you will have told them this when you introduced
yourself to the class]
What is the name of the paper that some people can taste
and others cannot? ANSWER = PTC Paper