PPT-Sex-Linked Traits

Essential Question How are dominant and recessive sexlinked traits passed onto offspring Sexlinked traits are determined by genes on sexchromosomes Most sexlinked alleles genes are carried on the X chromosome . 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.. Chapter . 7 Extending . Mendelian. Genetics . Section 7-1 Chromosomes and Phenotype. KEY CONCEPT . The chromosomes on which genes are located can affect the expression of traits.. MAIN IDEAS . • Two copies of each . 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.. 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:. . 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. Dr. . Aqeel M. . ali. 2019. B. asic . principles of heredity that Mendel discovered from his crosses among pea plants. . A mendelian principle . . sex-linked characteristics determined by . genes located on the sex chromosomes. . 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 . . Sex determination. Sex chromosome is determined at . fertilization time. .. Early stage fetus contains two . ducts system. :. Wolfian. (male).. Mullerian. (female).. Sexual difference starts in the . KEY CONCEPT . The chromosomes on which genes are located can affect the expression of traits.. Two copies of each autosomal . gene . affect phenotype.. Mendel studied autosomal gene traits, like hair texture. . 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 LINKED INHERITANCE. SEX LINKED INHERITANCE. . X LINKED . INHERITANCE . INHERITANCE. COLOUR BLINDNESS. X LINKED INHERITANCE. Y . LINKED INHERTANCE. HYPERTRICHOSIS. Y LINKED INHERITANCE.