Can two blood type o parents have a type a child type

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Unformatted text preview: epistatic to gene I H allele IAiH_ Lipid stalk A sugar (A antigen) B sugar (B antigen) No lipid stalk H/h controls production of lipid H to which A and B sugars are attached hh is always type O, no matter what I/i is 5 i is responsible for tacking the sugars on, h is responsible for attaching lipid stock (first building block) 4 Bombay is recessive. People with bombay look like O, but genetically they can be something else. ….YES Mother is IA_ hh type O Father is ii H_ type O Child is IAi Hh phenotypically O, genetically A type A ….so much for paternity testing based on blood typing 55 Dominant epistasis e.g., Summer squash colour 12:3:1 phenotypic ratio indicates dominant epistatis C_ = white cc = yellow or green C (no colour) masks G (yellow) and gg (green) Allele C is epistatic to gene G 56 Coat colour in squirrels is controlled by a single gene with 2 alleles. Two brown squirrels have 4 kits: 1 black, 2 brown and 1 tan. This occurs because of: a)  b)  c)  d)  the law of segregation Is for single gene the law of independent assortment incomplete dominance 1:2:1 all of the above two genes or more. *There may be more than one answer 57 Hypothesis testing 58 Deciding between different hypotheses using specific breeding tests X 4 Test Cross: New phenotype of F1 progeny indicates more than 1 gene is involved OR incomplete dominance of alleles in 1 gene ratio indicates recessive epistasis 59 Ratio indicates incomplete dominance All offspring will be black 60 Unfortunately, test-crossing in people is not an option for hypothesis testing Human families, (and most large mammals) consist of small numbers of offspring, relative to other species (peas and mice). Pedigree analysis is therefore required to track the inheritance mode of human traits 61 The same genotype does not always result in the same phenotype influenc...
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This document was uploaded on 02/25/2014.

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