Tracy Hyde Westfield Public Schools

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Tracy HydeWestfield Public Schools
Genetic Traits and the Numbers
Genetic Traits and the Numbers
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Predict

• In a group of ten people, how many do you think
  have brown eyes?
• How many have green eyes?
• How many blue eyes?

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(No Transcript)
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• Lets count Green Eyes.

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In ten people, 3 people have green eyes. What is
the ratio of green eyed people to non green eyed?
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The ratio would be 310

• What is the percent of green eyed people?
• 30

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Lets count brown eyes.
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In our group 5 people have Brown eyes. What is
the ratio of brown eye to non-brown eyed people?
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The ratio of brown to non-browned people would be
510

• What is the percent of brown eyed people in this
  picture?
• 50

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What is the ratio of blue eyed people in this
picture?
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In this picture 2 out of 10 people have blue eyes

• The ratio would be 210 having blue eyes.
• What percent have blue eyes?
• 20
• What percent are non-blue eyed?
• 80

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Tongue Rolling

• Believe it or not not everyone can roll their
  tongues!

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Predict

• How many people out of NINE do you think are
  tongue rollers?

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(No Transcript)
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In this group, only 2 people can not roll their
tongue.
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What is the ratio of non tongue
rollers?(remember, there are now nine people.)

• 29
• What is the percentage of non-tongue rollers?
• Divide 2 by 9.
• 22

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The majority of the group are tongue rollers!