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- Part of the difficulty of the genetics unit is knowing what type of problem you are being asked to solve and then solving it correctly. The following problems are a mix of normal Mendelian inheritance, incomplete dominance, co-dominance, sex-linked, and dihybrid crosses. Complete each of the problems below. Show your work! It’s difficult for me to know where you are making your mistakes (and help you to correct them) if I cannot see how you completed the problem. in certain fish, the mating of a black (B) fish with a white (W) fish will create offspring with a patchwork of black and white scales. What type of inheritance pattern is this?_____________________________________________ If a black and white fish is crossed with a black fish, what percentage of the fish will be: Black? ___________% White? ____________% Black and white? ___________%Part of the difficulty of the genetics unit is knowing what type of problem you are being asked to solve and then solving it correctly. The following problems are a mix of normal Mendelian inheritance, incomplete dominance, co-dominance, sex-linked, and dihybrid crosses. Complete each of the problems below. Show your work! It’s difficult for me to know where you are making your mistakes (and help you to correct them) if I cannot see how you completed the problem. Grasshoppers are black with red stripes (R), yellow stripes (Y), or both red & yellow stripes (RY). A red-striped grasshopper is crossed with red & yellow-striped grasshopper. What type of inheritance pattern is this?__________________________________________ Genotypic ratio: _____________________________ Phenotypic ratio: ____________________________Part of the difficulty of the genetics unit is knowing what type of problem you are being asked to solve and then solving it correctly. The following problems are a mix of normal Mendelian inheritance, incomplete dominance, co-dominance, sex-linked, and dihybrid crosses. Complete each of the problems below. Show your work! It’s difficult for me to know where you are making your mistakes (and help you to correct them) if I cannot see how you completed the problem. A mother had type A blood. Her husband has type B blood. They have a child with Type O blood. Is this possible? Use the Punnett square to support your answer. Is type O possible? ______________ What other blood type(s) could their future children have? ____________________________________________
- Part of the difficulty of the genetics unit is knowing what type of problem you are being asked to solve and then solving it correctly. The following problems are a mix of normal Mendelian inheritance, incomplete dominance, co-dominance, sex-linked, and dihybrid crosses. Complete each of the problems below. Show your work! It’s difficult for me to know where you are making your mistakes (and help you to correct them) if I cannot see how you completed the problem. When a skunk with wide (W) stripes reproduces with a skunk with narrow (w) stripes, their offspring all have medium stripes. A medium-striped skunk mates with another skunk with medium stripes. Determine the frequency of the phenotypes. Wide Stripes: _______________ / 4 Medium Stripes: ____________ / 4 Narrow Stripes: _____________ / 4Part of the difficulty of the genetics unit is knowing what type of problem you are being asked to solve and then solving it correctly. The following problems are a mix of normal Mendelian inheritance, incomplete dominance, co-dominance, sex-linked, and dihybrid crosses. Complete each of the problems below. Show your work! It’s difficult for me to know where you are making your mistakes (and help you to correct them) if I cannot see how you completed the problem. In seals, long whiskers (W) are dominant over short whiskers (w). What are the genotypic and phenotypic ratios for the offspring produced by mating a seal that is homozygous recessive with one that is heterozygous? Genotypic Ratio:_______________________________ Phenotypic Ratio:_______________________________Part of the difficulty of the genetics unit is knowing what type of problem you are being asked to solve and then solving it correctly. The following problems are a mix of normal Mendelian inheritance, incomplete dominance, co-dominance, sex-linked, and dihybrid crosses. Complete each of the problems below. Show your work! It’s difficult for me to know where you are making your mistakes (and help you to correct them) if I cannot see how you completed the problem. 1. In humans the allele for albinism is recessive to the allele for normal skin pigmentation. If a male who is heterozygous for albinism has children with a woman who is also heterozygous, what is the chance that a child will have normal skin pigment? What is the chance that a child will have albinism? Normal pigmentation? ________________ / 4Albinism? ______________ / 4
- Part of the difficulty of the genetics unit is knowing what type of problem you are being asked to solve and then solving it correctly. The following problems are a mix of normal Mendelian inheritance, incomplete dominance, co-dominance, sex-linked, and dihybrid crosses. Complete each of the problems below. Show your work! It’s difficult for me to know where you are making your mistakes (and help you to correct them) if I cannot see how you completed the problem. The genes for hemophilia, a condition that causes blood not to clot properly, are located on the X chromosome. It is a recessive disorder. A man normal for blood clotting has children with a woman who is a carrier of the condition but still clots normally. What percentage of the male offspring will have normal clotting? _______________ % What percentage of the male offspring will have hemophilia? _______________ %Fill out the blanks of the pedigree (AA, Aa, or aa) How many children did the original couple have? How many grandchildren do they have?.What is pedigree analysis? Suggest how such an analysis, can be useful.