PPT-lecture (6 ) Sex linked inheritance

Dr Aqeel M ali 2019 B asic principles of heredity that Mendel discovered from his crosses among pea plants A mendelian principle sexlinked characteristics determined by genes located on the sex chromosomes . 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. Contents:. Introduction to sex linked inheritance.. Chromosome carries which type of genes?. Three types of traits. Characteristics of sex linkage.. Types of sex linkage.. Sex linked disorders.. Sex linked 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. SBI3U. Mendel Demonstrated. :. Law of Segregation. Law of Independent Assortment. The . alleles. for a gene . segregate independently. . during meiosis. . This applies to alleles located on homologous chromosomes.  . Studying genetics . can be accomplished in part by . investigating the history of discoveries. that have lead to our . understanding of DNA and its role in gene expression and biological inheritance. X-LINKED DOMINANT INHERITANCE. X-LINKED INHERITANCE. dr. . Retno. . Sutomo. , Ph.D., . Sp.A. .. X-LINKED RECESSIVE INHERITANCE. Segregation of X-linked recessive allele. Carrier mother. Segregation of X-linked recessive allele. Discuss with your group the trait you chose, and what you found out about your family!. Be ready to share!!!!. Pedigrees . What is a pedigree. Family tree used to track genetic . disorders/abnormalities. Man:. Color. Blindness . Dr. . Asim. . masood. Red. -. Green. Color blindness. What are X-linked recessive . inheritance?. . X-linked recessive inheritance is a mode of inheritance in which a mutation in the gene on the X-chromosom. (6). Sex . linked . inheritance. Dr. . israa. . hussein. . hamzah. email: . esraa_hassan17@yahoo.com. szsh@uomustansiriyah.edu.iq. Reference book. : . genetic (Conceptual-Approach) fourth edition (2012). 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. 1. A. Background. . 1. Genetics. . 1860’s—. Mendel. . proposed that discrete . inherited . factors . segregate . and assort . independently . during gamete . formation. . 2. Cytology. . Definition . Allelle. is . an alternative form of a . gene . (one member of a pair) that is located at a specific position on a specific . chromosome. . These DNA coding . determine distinct traits that can be passed on from parents to offspring. . 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. Important. Notes. For revision only. Objectives: . Asses Mendel’s laws of inheritance. Understand the . bases. of Mendelian inheritance. Define various patterns of single gene inheritance using family pedigree and Punnett’s squares.