GENETICS REVIEW SHEET Genetics - Arapahoe High School

Karyotype: A picture of an individual’s _______________________.18. Name two things that we are able to determine by evaluating karyotypes:i.ii.19. Down’s Syndrome babies carry an extra ______________________________________ chromosome.20. Klinefelter’s Syndrome means that a person has an extra ______________________ chromosome.X-Linked Traits: Genes found on the _______________ chromosome.21. Two common, recessive, X-linked traits are: _____________________ and _______________________22. XX= ______________ symbol? _________________XY= ______________ symbol? _________________23. Hemophilia is an X-linked trait. Normal clotting (H) is dominant over hemophilia (h).a. A heterozygous normal (carrier) female is crossed with a male who has hemophilia. Whatare the results of their offspring?Cross: _____________ X _______________Punnett Square:Results:Pedigree24. = _______ = ________ = ________ = _________25. Use the following key to answer the questions: F = Normal f = Cystic FibrosisDetermine the genotype of each individual in the pedigree and write the genotype next to eachindividual above.