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Unformatted text preview: 2 alike alleles – homozygous 2 unlike alleles – heterozygous Appearance – phenotype (how it turns out; could be determined by the environment) – genotype + environmental factors Genes – genotype o Recessive – expressed only when it is by itself (both alleles have the gene, only one allele) o Dominant – always expressed Co-dominant alleles – both expressed (AB blood type) (enzyme glycolipid on RBCs A B O) o Dogs F – Floppy f – not floppy Mom – Ff, Dad – ff Gametes from mom: F, f ; Dad – f Offspring: Ff, ff (equal portions) – floppy: non floppy :: 1: 1 F f F FF Ff f Ff ff o Sex-linked (linked to the sex chromosome) Mom: XtXt; Dad: XTY Mom’s Gametes: Xt; Dad’s Gametes: XT, Y Offspring: ½: XTXt, ½: XtY...
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