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By : Kaylee and Khaleema
Genetics By : Kaylee and Khaleema
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1st Part of Genetics Pedigree Charts!!!!!!
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How To Create A Pedigree Chart
Step 1: Choose trait that you want to use( example : Eye color , Hair color ,etc ) Step 2 : Design a family tree Step 3 : Get information from your family ( example : mom , dad , grandparents , etc ) Step 4 : Fill out the pedigree chart with the information gotten from your relatives and fill out the chart and go as far as you can
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Example 1: John’s Parents
John’s mom , Sophia , has green eyes ( represented by b ) . John’s dad , Logan , has brown eyes ( represented by B ) . John has green eyes . If John’s parents were to have another child , what are the chances that the eyes will be green ? Sophia Logan John ? b b B b bb Bb bb
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Answer to Example 1 : There is a 50% chance that the next child will have green eyes .
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Example 2: John’s Family
John was at his college reunion and met up with his friend Cristina. A couple years later, they got married to each other . They had two kids that were named Lucas and Amber. As you know , John has green eyes . Cristina has light brown eyes . Lucas was born with light brown eyes and Amber was born with green eyes . If John and Cristina were to have another child , what are the chances that their kid will have light brown eyes ? John Cristina bb Bb Lucas Amber ? Bb bb
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Answer to example 2 : There is a 50% chance that the next kid that John and Cristina will have light brown eyes .
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2nd Part of Genetics : Punnett Squares( blood type )
Johnny's mom , Jean , has blood type B ( BO ) . Johnny’s dad , Scott , has blood type A ( AO ) . Johnny has blood type B (BO ) . If Johnny’s parents were to have another child , what are the chances that their next kid will have blood type A (AO) ? B O A O
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Answer To The Punnett Square
There is a 25% that Johnny’s parents next child will be blood type A ( AO ) .
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Example 2 : Punnett Squares
Chris was at a meeting with his friend Jessica . A couple years later , they got married . They had two kids , Jeanie and Sabrina . Jeanie has blood type A ( AA ) , and Sabrina has blood type A ( AO ) . What are Chris and Jessica’s blood type ? AA AO
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Answer To Example 2 : Chris : AO Jessica : AO
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Quiz What is step 1 to create a pedigree chart?
In example 2 , ( in the 2nd part of genetics ) , do you use a punnett squares or pedigree charts ? What is step 2 in making a pedigree chart ? What eye color is recessive and what color is dominant ?
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NOW THAT’S THE END ! THANK YOU FOR WATCHING!!!!!!!!!!!!!!!!!!!
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