Genetics Beyond Mendel

Genetics Beyond Mendel - Genetics Beyond Mendel a.) only...

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Genetics Beyond Mendel a.) only one single gene with autosomal dominant-recessive inheritance pattern b.) useful for examining traits with visible/discrete phenotypes however, mendelian genetics do not describe more complex traits codominance: when both alleles of heterozygous individual are fully expressed with neither being dominant over the other (like blood type) sex-linked traits: are genes that are coded for on the x chromosome. so sex linked traits are more prevalent in males because they only have one x chromosome, so the genes on x chromosomes are always expressed. whereas a woman needs to have two of the same gene in order for it to be expressed. women are carriers, and men actually experience it. women pass it on by giving the x chromosome while boys only get the y from dad. x-linked recessive traits are very common in men. polygenic: more than one gene collaborating to create one phenotypical result. (how most traits are created) pleiotropy:
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This note was uploaded on 03/02/2011 for the course ANTH 001 taught by Professor Mcfarlin during the Spring '11 term at GWU.

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Genetics Beyond Mendel - Genetics Beyond Mendel a.) only...

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