color blindness red/green color deficiency is most common blue/green color deficiency total cvd...
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COLOR Blindness
• http://colorvisiontesting.com/ishihara.htm• Red/Green color deficiency is most common• Blue/Green color deficiency• Total CVD (color vision deficiency)-shades of gray• Unilateral dichromacy- 1 normal eye - 1 CVD eye• 8-12 % Males• Less than 1% females
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Sex-Linked Traits
• Linked to Sex Chromosomes
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Horace and Thelma
A Colorblind Pedigree
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They had 4 kidsBOY BOY BOYGIRL
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Their spouses were:
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Their GENOTYPES are
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Their colors are:
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Their spouses colors
and genotypes
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If these 2 are the first generation
Then these are the second
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WHY?John and Sophie’s sons are colorblind.
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Will all of Sophie’s boy children be colorblind? WHY?
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We see that Stacia is a carrier. How did she get her genotype?
Why is there a ? mark By Liz?
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We see that Chris is colorblind.
WHY? Predict Amy’s genotype.
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Were you correct?
Can you explain it?
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Why isn’t Brian colorblind – his Dad is colorblind!
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Faye And Felicia and Audrey have the same genotype as Amy and Liz for much the same reason – which is. . . ?
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Phil has interesting parents. The technical term is CONSANGUINE. It is widely practiced and encouraged in some religions, such as Islam.
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Same Grandparents
THEN THESE 2 ARE FIRST COUSINS
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Same Great Grandparents
THEN THESE 2 ARE SECOND COUSINS
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It is interesting to determine Penelope’s genotype from her children’s genotypes.
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Why is Ryan colorblind?
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Monica is a carrier and her husband is colorblind.
Which of her children will be normal (no carriers.)
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Is it possible for Alice to be a carrier?