Pedigrees

Decode family trees! Practice pedigree charts for genetics inheritance.

Listen up to 5 minutes 45 sec. Pedigree explanation Video This is a pedigree chart of a family with attached earlobes (an autosomal recessive trait). What is the relationship between of I-1 and ll-3? father daughter father son cousins couple This is a pedigree chart of a family with attached earlobes (an autosomal recessive trait).A = Detached Earlobea= Attached EarlobeHeterozygous individuals are not coded. You have to figure them out!What is the genotype of person I-1? aa Aa AA XAY XaY XAYa XAXa XaXa This is a pedigree chart of a family with attached earlobes (an autosomal recessive trait).A = Detached Earlobea= Attached EarlobeHeterozygous individuals are not coded. You have to figure them out!What is the genotype of person II-2 and II-5? aa Aa AA XAXA XaY XAXa XaXa XAY This is a pedigree chart of a family with attached earlobes (an autosomal recessive trait).A = Detached Earlobea= Attached EarlobeHeterozygous individuals are not coded. You have to figure them out!What is the phenotype of person II-2 and II-5? Attached Earlobe Detached Earlobe This chart tracks Color-blindness through a family (a sex-linked recessive trait). How many females in generation II are affected? 1 2 3 4 This chart tracks Colorblindness through a family (a sex-linked recessive trait).N= normal, n= colorblindHeterozygous individuals are not coded. You have to figure them out!What is the genotype of I-2? nn Nn NN XNXN XNXn XnXn XNY XnY XNYn This chart tracks Colorblindness through a family (a sex-linked recessive trait).N= normal, n= colorblindHeterozygous individuals are not coded. You have to figure them out!What is the genotype of II-2? nn Nn NN XNXN XNXn XnXn XNY XnY XNYn This chart tracks Colorblindness through a family (a sex-linked recessive trait).N= normal, n= colorblindHeterozygous individuals are not coded. You have to figure them out!What is the genotype of III-3? nn Nn NN XNXN XNXn XnXn XNY XnY XNYn This chart tracks Colorblindness through a family (a sex-linked recessive trait).N= normal, n= colorblindHeterozygous individuals are not coded. You have to figure them out!What is the genotype of III-4 and III-5? nn Nn NN XNXN XNXn XnXn XNY XnY XNYn XnYn XNYN This chart tracks Colorblindness through a family (a sex-linked recessive trait).What is the phenotype of the completely shaded individuals? Normal Vision Colorblind