Discuss with your group the trait you chose and what you found out about your family Be ready to share Pedigrees What is a pedigree Family tree used to track genetic disordersabnormalities ID: 774794
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Slide1
Take out pedigree homework
Discuss with your group the trait you chose, and what you found out about your family!
Be ready to share!!!!
Slide2Pedigrees
Slide3What is a pedigree
Family tree used to track genetic disorders/abnormalitiesCan be used to determine the mode of inheritance for a particular disorder
Slide4Pedigree symbols
Slide5Determining inheritance patterns
Autosomal inheritanceSex-linked inheritance
Slide6Autosomal inheritance
controlled by a gene on an autosome (chromosomes 1-22)Autosomal dominantMales and females are affected equallyMany individuals are affectedAffected child MUST have an affected parentNo carriersAutosomal recessiveMales and females affected equallyTwo affected parents will always have an affected childNormal parents can have an affected childHas carriers
Slide7Sex-linked inheritance
X-linked recessiveAffects more males than femalesMany females are carriersMales CANNOT be carriersX-linked dominantNo carriers (male or female)All daughters of an affected male and a normal female are affectedAll sons of an affected male and a normal female are affectedY-linkedAffects only malesEither have it or you don’t
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