BIOA01H3 Lecture Notes - Sickle-Cell Disease, Anemia, Pleiotropy

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Pink plant + pink plant = 1 red, 2 pink, 1 white. Red plant + white plant = pink plant (f1 generation) Black mouse : cc + white mouse : cc =4 black mouse (cc) Black mouse: cc + white mouse: cc = 2 black mice, 2 white mice. A mutation in the gene coding for beta haemoglobin reduces the ability of the red blood cells to carry oxygen. People with sickle cell anaemia are homozygous for the recessive hb-s. Hb-a/ hb-s individuals ( heterozygous) have sickle cell trait. Pleiotropy condition where single genes affect more than one character of an organism (pg. 230) Albino"s are homozygous recessive at a gene : aa: normal pigmented couple , already have an albino child what is the probability of the next child being normally pigmented. Chances of having a albino= aa = . Chances of having a boy = probability of having a girl = .

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