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13.7: End of Chapter Content

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    • Michael B. C. Rivera

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    For Further Exploration


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    Image Description

    Figure 13.14a: This world map is colored in to reflect the percent of populations that have the A allele (for ABO bloodtypes). The lightest color reflects populations with 0-5% allele A, and these increase at 5% intervals to the darkest color for 35-40% allele A. The lightest colors are in the Americas, particularly in South America. The darkest colors are in Europe, Australia, and very northern North America.

    Figure 13.14b: This world map is colored in to reflect the percent of populations that have the B allele (for ABO bloodtypes). The lightest color reflects populations with 0-5% allele B, and these increase at 5% intervals to the darkest color for 25-30% allele B. The lightest color covers most of North and South America and Australia. The darkest colors are found in central Asia.

    Figure 13.14c: This world map is colored in to reflect the percent of populations that have the O allele (the most common allele for ABO bloodtypes). The lightest color reflects populations with 50-60% allele O, and these increase at 10% intervals to the darkest color for 90-100% allele O. The lightest color is in central Asia, and the darkes colors are in North and South America.

    Figure 13.19: This map shows the distribution of the four subspecies of chimpanzees and bonobos across west and central Africa.


    • Pan troglodytes verus: found across many nations in West Africa including Guinea, Sierra Leone, Liberia, and the Ivory Coast
    • Pan troglodytes ellioti: found only in Nigeria and Cameroon
    • Pan troglodytes troglodytes: found in Cameroon and Congo Basin
    • Pan troglodytes schweinfurthii: found in Burundi, Central African Republic, Congo, Democratic Republic of Congo, Rwanda, South Sudan, Tanzania, and Uganda.


    Pan paniscus: Found in the Democratic Republic of Congo

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