4-H Veterinary Science Genetics And Disease Lesson
Veterinary SciencePreparatory Training for the Veterinary AssistantFloron C. Faries, Jr., DVM, MS
GeneticsFloron C. Faries, Jr., DVM, MS
Objectives Describe the structure of genetic material Describe the replication and expression ofgenetic material Discuss the role of biotechnology in theanimal industries Describe the process of selection forconvenience traits
A Science Genetics Study of inheritance (heredity) Inherited genetics How characteristics are passed from generation togeneration Study of genetic codes of body cells Molecular genetics Heredity Transmission of characteristics from parent to offspring By means of genes on chromosomes in nucleus ofbody cells Controlled by genes (DNA)
Chromosomes Occur in pairs One from paternal parentOne from maternal parent Made of DNA with a strand of 4 nucleotidebases
Genes (Traits) Occur in pairs on chromosome pairs One from each parent Stores information on chromosomes Tells cell how to build protein (good or bad) Proteins made are coded by specific genes Genetic code of nucleotide bases
Alleles Alternative copy of same gene Dominant or recessive Protein construction slightly different Function slightly different Different forms Co-dominant Co-recessive One dominant and one recessive Recessive genes expressed if no dominant genes May be good or bad
Genetic Code Combination and order of nucleotide bases In DNA of chromosomes in nucleus of bodycells Ordered by genes to build proteins
Nucleotide Bases Found in DNA of chromosomes Bind on pairs of chromosome strands Building blocks of genetic codeDNADNAAdenine --- ThymineThymine --- AdenineCytosine --- GuanineGuanine --- Cytosine
Transcription To make protein from nucleotide code of RNAcopy of chromosome DNA RNA strand copy binds with DNA strandMessenger RNA (mRNA) Leaves nucleusShuttles between nucleus and cytoplasma of cellDNARNAAdenine --- UracilThymine --- AdenineCytosine --- GuanineGuanine --- Cytosine
Translation Process of protein synthesis from the code onmRNA Ribosome in cytoplasma bind to mRNA toread code Produces strand of amino acids protein Code of 3 nucleotide bases codon
The start codon is AUG. Methionine is the only aminoacid specified by just one codon, AUG. The stop codons are UAA, UAG, and UGA. Theyencode no amino acid. The ribosome pauses and fallsoff the mRNA.
Body Cells Divide Mitosis – 2 cells with copies of chromosomepairs (diploid) Meiosis- 4 cells with copies of chromosomesingles (haploid)
Reproduction Transfer of haploids from both parents’(gametes) to form embryo (diploid) Phenotype A particular trait that is observed Genotype Genetic makeup of a single traitNot visible
Expression of Genes (Phenotype) Homozygous Genes are alike Dominant alleles PP Recessive alleles pp Heterozygous Genes are different One dominant and one recessive alleles Pp Carriers
AA x AABlack x BlackSireAAAA AA ABlackBlackDamAAAABlackABlackAll black
AA x AAAAAAAAAAAAAA
AA x aaBlack x RedSireAaAA aA aBlackBlackDamaAAaBlackaBlackAll black
AA x aaaaAAAaAaAaAa
Aa x AaBlack x BlackSireAAaA AA aBlackBlackDamaAaaBlackRed¾ Black¼ Reda
Aa x AaAaAaAAAaAaaa
Aa x aaBlack x RedSireAaaA aa aBlackRedDamaAaaBlackRed½ Black½ Reda
Aa x aaaaAaAaAaaaaa
Biotechnology A science- study of techniques Genetic Engineering (Biotechnology) Gene mappingRecombinant DNA processes – producesvaccines, hormones, testsGene deletion – produces vaccinesGene transfer – produces improved productionand resistanceNuclear transfer – produces cloning (twinning)
Transcription To make protein from nucleotide code of RNA copy of chromosome DNA RNA strand copy binds with DNA strand Messenger RNA (mRNA) Leaves nucleus Shuttles between nucleus and cytoplasma of cell
veterinary practice means a business that provides veterinary services. veterinary practitioner means a person who is registered under this Act as a veterinary practitioner. veterinary science includes any branch of the science or art of veterinary medicine or of veterinary surge
Genetics – A Continuity of Life – Daniel Fairbanks, Ralph Anderson. Concepts of Genetics – Klug and Cummings. Principles of Genetics – Hartt and Jones. GN 5 B 07 : CORE COURSE VII Medical Genetics Total – 54 hrs Unit- 1: Principles of Human Genetics (2 hrs) History, Origin of medical genetics, classification of genetic disease .
Veterinary Science Preparatory Training for the Veterinary Assistant Floron C. Faries, Jr., DVM, MS . 4-H Veterinary Science Program Floron C. Faries, Jr., DVM, MS. Profession of Veterinary Medicine . (4041) Veterinary Assistant Handbook (IMS) PRICE: 40.00 Description:
Somatic cell genetics. Books Recommended: 1. Genetics - Gardener 2. Molecular Genetics of Bacteria 2nd edition 1995, Jeremy W.Dale.-John Wiley and sons. 3.Cell biology (1993)-David E.Sadva (Jones and Barrette) 4.Modern genetics (2nd edition,1984)-A.J.Ayala and W.Castra(Goom Helns,London) 5. Genetics by P.K Gupta. 6. Genetics by Verma and Agarwal 7.
HUMAN GENETICS AND PEDIGREES 7.4 . Key Concept A combination of methods is used to study human genetics . Human Genetics Human genetics follows the patterns seen in other organisms The basic principles of genetics
(6-a) "Veterinary assistant" means a person who: (A) is employed by a licensed veterinarian; (B) performs tasks related to animal care; and (C) is not a certified veterinary assistant or a licensed veterinary technician. (7) "Veterinary medicine" includes veterinary surgery, reproduction and
THE VETERINARY INFORMATION VERIFYING AGENCY – VIVA: The Texas Board of Veterinary Medical Examiners is a member of the American Association of Veterinary State Boards (AAVSB). AAVSB has created a division called the Veterinary Information Verification Agency (VIVA). VIVA is a central repository for records related to veterinary technician .
VETERINARY MEDICAL BOARD History and Function of the Veterinary Medical Board The Veterinary Medical Board (Board) traces its origins back to 1893, originally established as the State Board of Veterinary Examiners. Since then, the Board has regulated the veterinary medical professio
