PPT-Gene interactions How do the genes and alleles of genes interact to produce the phenotypes

The genotypephenotype relationships explored by Mendel are valid but atypical Most phenotypes are not derived from a single genesingle phenotype model Why More than two alleles often exist Dominance of one allele over another may not be complete. We know that many characteristics are passed on through genes.. Most of these characteristics are not passed on through one gene with only two alleles.. Most are . polygenic. where their traits are caused by a number of different genes.. Online Resource. www.informatics.jax.org. Joanne . Berghout, PhD. Oct 13, 2014. 1. Genes, alleles and genotypes. Within a species, all members carry the same set of . genes. Individual differences are due to. TFIIF. TFIIA. RNA Pol II. TFIID. TFIIB. core promoter. exon 1. Cactus. Dorsal. Dorsal. Tube. Pella. Pella. Tube. Spatzle. Toll. So. Eya. Su(H. ). CtBP. Gro. Delta. Kuz. Detecting Protein-Protein Interactions. the process by which a trait/gene changes function; the gene has been . co-opted to do a new job. Gene Co-option. Inheritance of Acquired Characteristics. Epigenetics turns on/off genes. http://cnx.org/content/m26565/latest/graphics35.jpg. Heredity Group. National Academies . NorthStar. Summer Institute for Undergraduate Science Education. Summer 2012. Note that the photos and diagrams in this presentation were acquired from various sources and there may be copyright issues with them.. Interactions. June 18, 2015. Why PPI?. Protein-protein interactions determine outcome of most cellular processes. Proteins which are close homologues often interact in the same way. Protein-protein interactions place evolutionary constraints on protein sequence and structural divergence. EQ: How are complex traits expressed?. Rules of Inheritance. Some traits follow the simple rules of Mendelian inheritance of dominant and recessive genes.. Complex traits follow different patterns of inheritance that may involve multiples genes and other factors. . National Academies . NorthStar. Summer Institute for Undergraduate Science Education. Summer 2012. Note that the photos and diagrams in this presentation were acquired from various sources and there may be copyright issues with them..  . 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. . . . inheritance . Parents pass . . to their offspring. . genes. What does letter A represent?. Chromosome. A. B. C. What does letter B represent?. DNA. A. B. C. What does letter C represent?. , . M.V.Sc. ., Ph.D.. Assistant Professor. Dept of . Animal Genetics and Breeding. Bihar Animal Sciences University, Patna (Bihar). Basic Concept on Genetics . of . Dairy . P. roduction. What is genetics?. GENETIC INTERACTION. With the help of different experiments, it was found that most of the characters of living organisms are controlled / influenced / governed by a collaboration of several different genes.. Review 8. Important Vocabulary. Gene – piece of a chromosome that codes for a trait. Trait – a specific characteristic that varies from one individual to another. You are your parents!. Dad’s chromosomes. In . epistasis less than four phenotypes appear in F2. .. (і) . Dominant Epistasis. (12:3:1). (ii) Recessive epistasis.(9:3:4)(Supplementary interaction). (iii) Duplicate Recessive Genes (9:7) (. Complementary Genes.