BIO 140 CUNY York College Incidence of Cystic Fibrosis in a Families Problems

BIO 140 CUNY York College Incidence of Cystic Fibrosis in a Families Problems BIO 140 CUNY York College Incidence of Cystic Fibrosis in a Families Problems The Genetics Problem Set is available in PowerPoint or PDF. PowerPoint will probably be easier for you to mark up using text boxes to insert your answers. Answer the questions on all 4 pages and show all work. ORDER NOW FOR CUSTOMIZED AND ORIGINAL NURSING PAPERS genetics_problem_set__1_.pptx genetics_problem_set.pdf Bio 140 Week 12: Genetics Problem Set Name _______________________________________ Genetics Practice Problems 1. For each genotype below, indicate whether it is heterozygous (He) or homozygous (Ho) AA _____ Bb _____ Cc _____ Dd _____ Ee _____ ff _____ GG _____ HH _____ Ii _____ Jj _____ kk ____ Ll ____ Mm _____ nn _____ OO _____ Pp _____ 2. For each of the genotypes below determine what phenotypes would be possible. Purple flowers are dominant to white PP _____________ Pp _____________ pp ______________ Round seeds are dominant to wrinkled RR ______________ Rr ______________ rr _______________ Brown eyes are dominant to blue BB ___________ Bb ____________ bb _____________ Bobtails are recessive (to long tails) TT ____________ Tt ____________ tt _____________ 3. For each phenotype below, list the genotypes (remember to use the letter of the dominant trait) Straight hair is dominant to curly Tail spikes are dominant to plain tails _____ straight ____ spikes _____ straight ____ spikes _____ curly ____ plain 4. Set up the Punnet squares for each of the crosses listed below. Round seeds are dominant to wrinkled. Rr x rr What percentage of the offspring will be round? _________ Rr x Rr What percentage of the offspring will be round? _______ RR x Rr What percentage of the offspring will be round? _______ Practice with Crosses. Show all work! 9. In pea plants purple flowers are dominant to white flowers. 5. A TT (tall) plant is crossed with a tt (short plant). Two white flowered plants are crossed… What percentage of their offspring will have white flowers? ________ 10. A white flowered plant is crossed with a plant that is heterozygous for the trait. What percentage of the offspring will be tall? ___________ 6. Show the cross of a Tt plant and a Tt plant. What percentage of the offspring will have purple flowers? _______ 11.BIO 140 CUNY York College Incidence of Cystic Fibrosis in a Families Problems Two plants, both heterozygous for the gene that controls flower color are crossed. What percentage of the offspring will be short? ______ What percentage is tall? _______ 7. A heterozygous round seeded plant (Rr) is crossed with a homozygous round seeded plant (RR). What percentage of the offspring will be homozygous (RR)? _______ 8. A homozygous round seeded plant is crossed with a homozygous wrinkled seeded plant. What are the genotypes of the parents? __________ x __________ What percentage of the offspring will also be homozygous? ________ What is the genotype of all of the offspring? ________ What percentage of their offspring will have purple flowers? _________ What percentage will have white flowers? _________ 12. In guinea pigs, the allele for short hair is dominant. What genotype would a heterozygous short haired guinea pig have? ____ What genotype would a purebreeding short haired guinea pig have?____ What genotype would a long-haired guinea pig have? ________ Show the cross for two heterozygous guinea pigs. What percentage of the offspring will have short hair? ________ What percentage of the offspring will have long hair? _______ Bio 140 Week 12: Pedigree Analysis Name _______________________________________ 3. The following pedigree shows the inheritance of TaySachs in a family. Tay-Sachs is a recessive disorder that causes lysosomes to be unable to break down waste products in the cell. These wastes build up in brain cells and cause damage and eventual death. Indicate the genotypes for each of the family members. 4. This pedigree shows the incidence of cystic fibrosis in two families. This disorder causes mucus to build up in the lungs, resulting in difficulties with breathing. Indicate the genotypes for each of the family members. 5. In humans, polydactyly is a condition where a person has extra fingers or toes. The allele that causes this trait is dominant. A person with Dd or DD will have extra digits. Fill out he pedigree of this family where polydactyly has been observed. … Get a 10 % discount on an order above $ 100 Use the following coupon code : NURSING10

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