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12/15/21, 7:49 PM
• Write your homework — get it stamped!
• Update your table of contents for today!
• Complete the “Before” column iûiNLY on the
Anticïpation Guide on the front counter and tape
it on to page 14!
Date
Session
1/22 &
7
1/26
Activity
Page
Anticipation Guide & Background Notes
14
“Milk...How Sweet ls lt?” Lab Guide
15
https://studyIib.net/doc/1 0058085/co-evoIution-of-gènes-and-culture
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12/15/21, 7:49 PM
Warm-Up
• What were your answers on the
Anticipation Guide?
• What do you think coevolution is?
II
’
J
,
• Starting with the next slide, whatever is
in black are the notes you should be
writing!
https://studyIib.net/doc/1 0058085/co-evolution-of-genes-and-culture
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12/15/21, 7:49 PM
C•evo›lution
Coevolution — when 2 (or more)
organisms or things affect each
other’s evolution/evolve together
https://studyIib.net/doc/1 0058085/co-evolution-of-genes-and-culture
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Lactose Vs. Lactase Notes
• Lactose = a sugar found only in milk
• Lactase = an enzyme found in the lining
of the small intestine that breaks lactose
down into glucose, which con be digested
by the body
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Just FYI...
Enzvme = a substance produced by a living
organism that acts as a catalyst to bring
about a specific biochemical reaction
https://studyIib.net/doc/1 0058085/co-evoIution-of-gènes-and-culture
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Lactose Vs. Lactase
• What does lactose intolerance mean?
• So what do you think lactase persistence
means?
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MilB
• These are genetic characteristics...so, do
you think that it is more likely for people to
be lactose intolerant or lactase persistent?
https://studyIib.net/doc/1 0058085/co-evolution-of-genes-and-culture
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The Facts About Lactose Intolerance:
Remember, Milk has Sugar, Fats & Proteins!
• Lactose intolerant people cannot digest the sugar (lactose)
in milk because they do not create enough of the lactase
enzyme.
• Because the milk “races through“ the digestive system very
little of the other nutrients (fats & proteins) can be
absorbed
https://studyIib.net/doc/1 0058085/co-evolution-of-genes-and-culture
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Milk - How Sweet 1s It? Lab
• Your group will have a sample of the “intestinal
fluid” of a patient. You will test the fluid to
determine if your patient has the gene for lactase
persistence and is able to digest milk.
• Follow the lab directions and share your data with
the class by adding your data to the table on the
board.
• Answer the lab questions on your sheet.
https://studyIib.net/doc/1 0058085/co-evolution-of-genes-and-culture
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il
How Sweet Is It? La Roles
Leader — reads all directions and keeps group on
task; reinforces the jobs of others
• Su
Mana er Clean U manages supplies & cleans
up after both parts of the lab are complete
• Math & Ma Master - does calculations & is in charge of
recording math & map information (someone with a
phone & an agenda to use the map in the front of it)
• Discussion Leader - Leads the discussion of the questions
to share information with the group and the class if
required
https://studyIib.net/doc/1 0058085/co-evolution-of-genes-and-culture
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ow Sweet
•* a
ts
2 minutes
Samples
Glucose levels
(mg/dL)
Lactose Intolerant or
Lactase Persistent?
Patient #1
(Japan)
Patient #2
(Kenya)
Patient #3
(China)
Patient #4
(Italy)
Patient #5
(Papua New Guinea)
Patient #6
(Finland)
Patient #7
(Saudi Arabia)
Patient #8
(Uganda)
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1. Calculate the frequency of lactase persistence for the 3-4
regions on your strip of paper.
2. For each region, you must put a sticker on the board. If the
percentage is less than 40 0/o, place a pink sticker, if the
percentage is equal to or greater than 40 0/o, place a green
sticker.
= lactose intolerance
= lactase persistence
3. When you have the percentages calculated, send your
Math & Map Master to place the stickers on the correct
country on the map on the board.
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1. Create a key for the map on your answer sheet.
- Green for lactase persistence (ability to digest milk Z 40Ozâ)
- Red for lactose intolerance (ability to digest milk < 40%)
2. Using dots or shading, duplicate the class data on the map on your
note guide.
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Global Distribution of the
Lactase Persistence Genotype
Answer the activity
questions below the
map
on your note sheet
Scotland
AL
Libya
’*
Saudi Arabia
B A f'•Jt A
a
too
q
TURHE Y
ES*Lt
AR
Congo DRC
https://studyIib.net/doc/10058085/co-evolution-of-genes-and-culture
t /. r , I . \ .X
Ethiopia
Uganda
Kenya
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Got Lactase? The Co-Evolution of Genes & Culture
Got Lactase. The Co-Evolution of Genes and Culture
http://www.hhmi.org/biointeractive/making-fittest-got-lactase-co-evolution-genes-and-culture
htt
www. outube.com/watch?v=umiLaW5AmK &noredirect=1
• During the video, answer the video questions 1-4
• After the video, go back to the Anticipation Guide from your WarmUp and fill out the “After” column, and then answer question 5.
https://studyIib.net/doc/10058085/co-evolution-of-genes-and-culture
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HOMEWORK:
Answer the reflection
questions on the back
of the note guide by
next class!
https://studyIib.net/doc/10058085/co-evolution-of-genes-and-culture
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