14. T = CAN taste PTC t = taste PTC Tt x Tt CAN’T T t T TT Tt Tt tt t 25% What is the probability of TT? 50% What is the probability of Tt? 25% What is the probability of tt? 75% What is the probability you can taste PTC? 25% What is the probability you taste PTC? can’t 15. Cross an AB blood type mother with a homozygous B blood type father: A B AB x B B AB BB B AB BB AB and B blood What blood type(s) do the offspring have? 50 % heterozygous and 50% homozygous Are the offspring heterozygous or homozygous? AB heterozygous and B homozygous Are the parents homozygous or heterozygous? When two traits are both dominant they both show What is the co-dominance? AB shows co-dominance Which blood type shows co-dominance? 16. Make a Punnet square for dimples crossing DD x dd D = Dimples d = no dimples D D d Dd Dd d Dd Dd 100% What is the probability of a person having dimples? 0 % What is the probability of a person having no dimples? 0 % What is the probability of a person being DD? 100 % What is the probability of a person being Dd? 0 % What is the probability of a person being dd?
14. T = CAN taste PTC t = CAN’T taste PTC Tt x Tt T t TT Tt Tt tt T t What is the probability of TT? 25% What is the probability of Tt? 50% What is the probability of tt? 25% What is the probability you can taste PTC? 75% What is the probability you can’t taste PTC? 25% 15. Cross an AB blood type mother with a homozygous B blood type father: A B AB BB AB BB AB x B B B What blood type(s) do the offspring have? AB and B blood Are the offspring heterozygous or homozygous? 50 % heterozygous and 50% homozygous Are the parents homozygous or heterozygous? AB heterozygous and B homozygous What is the co-dominance? When two traits are both dominant they both show Which blood type shows co-dominance? AB shows co-dominance 16. Make a Punnet square for dimples crossing DD x dd D = Dimples d = no dimples D D Dd Dd Dd Dd d d What is the probability of a person having dimples? 100% What is the probability of a person having no dimples? 0 % What is the probability of a person being DD? 0 % What is the probability of a person being Dd? 100 % What is the probability of a person being dd? 0 %
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