PDF-Sex-Linked Traits

pg 258 11 1417 19 Sex Linkageare controlled by genes located on either the X or Y chromosome homologous DNAHuman Y . Homework #2 is due on Monday in lecture.. Change to 1b. . Do not calculate a . c. 2. value. .. Just calculate the . expected. phenotypic ratios if the genes for brown-ness and disease-resistance are actually the same gene (or completely linked). Then, say whether complete linkage is possible given the observed data.. Kyle . Stutts. . Sam . houston. state . university. Sex-Linked Characteristics. Objectives. Students will be able to:. Comprehend how inheritance plays a role in sex-linked genes. Explain the difference between sex- linked, limited, and influenced inheritance. Kyle . Stutts. . Sam . houston. state . university. Sex-Linked Characteristics. Objectives. Students will be able to:. Comprehend how inheritance plays a role in sex-linked genes. Explain the difference between sex- linked, limited, and influenced inheritance. R. evised based on textbook author’s notes.. Doubly linked lists. A linked list in which each node contains a data component(s) and two links: . one pointing the next node and . one pointing to the preceding node.. Human Genetics. . Thomas Hunt Morgan. – (early 1900’s). - Worked with Drosophila (fruit flies).. - Discovered sex chromosomes (X and Y)…Y is shorter than X in length.. - Females = XX Males = XY. What has gone wrong?. 2. Certain human genetic disorders can be attributed to the inheritance of single gene traits or specific chromosomal changes, such as nondisjunction.. illustrative examples:. . c/o: Aaron, Darcie, Diana, . Geeta. , Kristin, Rou-Jia. Introduction. Our “teachable unit”: Heredity module . Embedded within Introductory Biology course. Prerequisites: None (high school level biology). Part 4. What is a PEDIGREE. A chart used to trace traits throughout a family. Parts of the chart. Circle = females. Squares = males. Half-filled in/Dotted = carrier. Have the gene but do not show signs of it. Sex-linked DisordersBiologySex-Linked TraitsSex-linked traits are produced by genes only on the X chromosome They can be Dominant or RecessiveA dominant a recessiveWhat would be the genotypes of Stolen and edited from: IMS Dr. Kyle . Stutts. (SHSU) and Brandon . Freel. Objectives. Discuss genetic inheritance.. Investigate principles of inheritance.. Demonstrate how inheritance plays a role in sex-linked genes. Sex determined by . genes. found on the . X. and . Y. chromosome. Females: . egg. produced with an . X. chromosome. Males: . ½. sperm cells contain . X. ; and the other . ½. contain . Y. There is a . Which gender (male or female) is most likely to have sex-linked traits? . How many X chromosomes do males have? . How many X chromosomes do females have? . Why does a single X chromosome that carries the allele for red-green colorblindness cause males to be color blind but . Karyotype. Karyotype. – a . picture of . chromosomes. Autosomes. : the first 22 homologous pairs of chromosomes. . Autosomes . are the same for both males and females..  Sex chromosomes. : determines the sex of the individual. . Sex Determination. Xy =. . XX= . female. male. Female . karyotype. Male . karyotype. X and Y chromosomes. Who decides. ?. Mom can give X . Dad can give X or Y.