PPT-8.4 – Co-dominance & Multiple Alleles

What you should know The etiquette used to represent genetic crosses Know what is and how to represent a monohybrid cross Know what is and how to represent a cross showing sexlinkage. Incomplete Dominance. One allele is not completely dominant over the other.. The heterozygous phenotype is . in-between. . the homozygous phenotypes.. Incomplete Dominance. If you cross a . RED. flower with a . be 10/13(midterm-yes . includes all up to now). I have the genetics review up on my page already, it would be wise for you to go ahead and start it. 2. nd. set of journals due 10/7. Incomplete Dominance. What you should know:. The ‘etiquette’ used to represent genetic crosses.. Know what is, and how to represent a monohybrid cross.. Know what is, and how to represent a cross showing sex-linkage.. Exceptions. 1.31.13. Mendelian. Exceptions. Mendel got lucky – all 7 traits he studied showed . complete . (simple). dominance. .. Mendelian. Exceptions. Mendel got lucky – all 7 traits he studied showed . Codominance. and Incomplete Dominance. The Different Forms of Inheritance. Mendel’s Inheritance (Monohybrid + . Dihybrid. ) = Last lesson. Incomplete dominance = This lesson. Codominance. = This lesson. Other Patterns of Inheritance. Not all genes show a simple pattern of inheritance…. Many genes have more than two alleles. Many traits are controlled by more than one gene. Complete Dominance. Definition: . Exceptions. Mendelian. Exceptions. Mendel got lucky – all 7 traits he studied showed . complete . (simple). dominance. .. Mendelian. Exceptions. Mendel got lucky – all 7 traits he studied showed . Complete Dominance. Recall . that in Mendel’s pea plant crosses, one allele was completely dominant over another, a relationship called . complete dominance.. Heterozygous and dominant homozygous plants have the same phenotype.. Multiple Alleles. More than 2 alleles for a gene. Dominance hierarchy (one allele dominates over the other). Ex. Fruit Fly eye colour . 4 alleles: Red, Apricot, Honey, White. To show dominance hierarchy use first letter of the gene name (E=Eye colour) and a superscript to reflect how dominant it is (1 is most dominant). Extension to Mendelian analysis . (single gene inherence, dominance , lethal alleles , multiple alleles, pleiotropy). Extensions to Mendelian analysis:. Beginning with the first decade of the twentieth century, geneticists subjected many kinds of plants and animals to controlled breeding tests, using Mendel’s 3: 1 phenotypic ratio as a guideline. If the traits under analysis behaved as predicted by Mendel’s laws, then they were assumed to be determined by . Modified Mendelian . dihybrid. . (dominance , lethal gene ) . Dr. . . israa. . hussein. . hamzah. email: . esraa_hassan17@yahoo.com. szsh@uomustansiriyah.edu.iq. Reference book. : . genetic (Conceptual-Approach) fourth edition (. (10) Catalyst. (. 25. ) . GN and Board Work: Co-dominance and Blood Types. (40) . Who’s the Daddy? Genetics. (10) Co-dominance Practice. I can:. predict offspring ratios for co-dominant traits. Catalyst. Exceptions. Mendel got lucky – all 7 traits he studied showed . complete . (simple). dominance. .. Mendelian. Exceptions. Mendel got lucky – all 7 traits he studied showed . complete . (simple). (10) Catalyst. (25) GN: Incomplete Dominance. (10) GP: . Spongebob. Genetics. (15) IP: EOC Grab Bag. (5) Exit Ticket. (20) . Trashketball. : Review Cells and Organelles. I can:. predict offspring of incomplete dominant crosses.