IncompleteDominance

Co-Dominance Roan horse Erminette Chicken

What is polygenic inheritance What is polygenic inheritance? “poly” = several or many “genic” = genes Skin, Eye Color, Height, Weight

Sex-Linked Traits in Humans Red-Green Color Blindness Recessive allele on the X chromosome

XH Y XH XH XH Y XH Xh Y XH Xh Xh In humans, hemophilia is a sex-linked trait.  Having hemophilia is recessive (Xh) to being normal (XH). The heterozygous female is called a carrier.  Cross a carrier female with a normal male. XH Y male __ XHXh __  X  __ XHY ___ XH XH XH Y XH Xh female XH Xh Xh Y