Polygenic PowerPoint PPT Presentations

Polygenic Traits Polygenic traits are continuous Because so many alleles contribute to the final phenotype, a variety of phenotypes can occur! For example, height is ...

Title: PowerPoint Author: CHEN Feng Last modified by: Created Date: 8/22/2000 12:22:03 AM Document presentation format:

If skin colour in humans is determined by 3 gene pairs and each ... Two pure breeding Sorghum lines with lengths of 75 cm and 55 cm respectively, are crossed. ...

Down's syndrome (Trisomy 21 as there are 3 copies of chromosome 21 in Down's ... Can lead to Down's Syndrome. Alterations of Chromosome Structure. Deletion ...

contributing or additive alleles. non-contributing or non-additive alleles ... 1 contributing allele. 2 contributing alleles. 3 contributing alleles. 4 ...

Other names for polygenic traits are multi-factorial traits, or quantitative traits. ... For example, height is a polygenic trait. ...

RR increases as the number of affected family members increase ... Prevalence is increasing as populations become 'westernized' Type II diabetes and the thrifty ...

Frequency-Dependent Selection on a Polygenic Trait

Use a Punnett square to work out possible genotypes of offspring for polygenic inheritance. ... Handedness. Right. Left. 2. 4. 6. 8. 10. 12. 14 ...

HANDOUTS for POLYGENIC INHERITANCE SLIDESHOW HANDOUTS for POLYGENIC INHERITANCE SLIDESHOW The number of alleles coding for the cells to make melanin determine how ...

The area of genetics that studies their mode of inheritance is called quantitative genetics. Description (cont.) Many important agricultural traits such as: ...

Chi-Squares, Pedigrees, and Polygenic Traits. I. Chi-Square ... These traits are called polygenic and include color in pigs, skin color in ...

Generic Bell Curve for Polygenic Trait Section 16-1 Frequency of Phenotype Phenotype (height) Figure 16 2 Relative Frequencies of Alleles Figure 16 3 Phenotypes ...

Continuous variation: Polygenic and quantitative traits. A=1. a=0. B=1. b=0. 0. 1. 2. 0. 1 ... A=1gr, B=1gr C=1gr D=1gr, E= 1gr, a, b, c ,d, e=0gr. 0. 1 2. 3. 4 ...

The percentage reduction by aspirin (red) differs between the 2 groups, because ... a lysine, thereby doubling the rate of colon cancer in the expressing population. ...

environmental variation acting on a single gene. W P R. frequency ... environmental variation acting on a single gene - effects of multiple genes ...

Functional genomic approach to ion channels as targets in ... pharmacology. dopamine blockers treat the schizophrenia. correlation with affinity at D2 receptor ...

Extra: In an example of polygenic inheritance, there are three genes that control skin appearance in lizards, B, G, and R. B makes bumpy skin, while b is smooth.

Mendel and Heredity Chapter 8 Ms. Hogg, Biology Pedigrees Polygenic Traits Polygenic traits are controlled by two or more genes, usually on different chromosomes.

... Polygenic Traits ... Polygenic traits: are traits affected by many genes (no ... Polygenic traits are affected by the environment. 5. The basic model for ...

The Work of Gregor Mendel: Monohybrid, Dihybrid, Incomplete, Codominance, Multiple Alleles, Polygenic Traits

More Genetics & Pedigrees Incomplete Dominance Multiple Alleles & Codominance Polygenic Traits Additive effect of multiple genes on a single phenotype Results in ...

Inbreeding. Incomplete dominance. Linkage. Locus. Multi-allelic. Phenotype. Pleiotropy. Polygenic ... 'Parents pass factors' to their offspring that are ...

... Limitations & missing heritability Gene/pathway tests Polygenic models Outline for GWAS Review / Overview Design Analysis QC Prostate cancer example ...

Non-Mendelian Genetics: Vocabulary Terms 89. Pedigree 90. Sex-linked trait 91. Polygenic trait 92. Incomplete dominance 93. Codominance 94. Multiple alleles 95 ...

23-* PATTERNS OF INHERITANCE Chapter 23 Polygenic Inheritance cont d Skin color Controlled by many gene pairs and many alleles Let s assuming a simple model of ...

Chapter 16-1 Genes and Variation 3 ... Review and Homework 16-2 Guided Reading Chapter 16 Evolution of Populations 16-1: ... Natural Selection on Polygenic Traits ...

II.) Types of Natural Selection A.) Most traits are polygenic: controlled by many genes. 1.) These traits therefore have a normal distribution and a characteristic ...

Non-Mendelian Genetics is about other patterns of inheritance Exceptions to the Rule Incomplete Dominance Codominance Multiple Alleles Polygenic Traits Sex-Linked ...

The gene is NOT on a sex chromosome, but SEX affects the phenotype ... A calico cat is ALWAYS what sex? Multifactorial and polygenic traits ...

Led to knowledge of inheritance. Heredity transmission of ... RR x Rr Rr = roan. Polygenic traits traits controlled by two or more genes. ( poly = many) ...

Genetics II Mendelian Genetics Complete dominance Non-mendelian Genetics Codominance Incomplete dominance Multiple alleles Pleiotropy Epistasis Polygenic inheritance ...

Epistasis - quantitative characters: polygenic inheritance ... E. Complications: Epistasis - Expression of one gene depends on another - Mouse coat color: ...

Immune system Chp. 16 (pp. 323-350) ~20,000 genes affect immunity, usually polygenic or multifactorial traits Major Structures- Lymphocyte (produce by spleen) - one ...

Neurodevelopmental disorder with a spectrum of clinical conditions. 3 areas of ... Evidence supports polygenic inheritance. Recurrence risk is 5-8% in siblings ...

INCOMPLETE DOMINANCE cont d: ... Codominance CO-DOMINANCE cont d: Multiple Alleles Polygenic Trait- Pleiotropy Epistasis Epistasis cont d Influence of ...

incomplete dominance 2. pleiotropy 3. polygenic What is the chromosome theory of inheritance? 1. meiosis explains Mendel s rules What are linked genes? 1.

Set up Cornell Notes on pg. 75 Topic: 7.2 Patterns of Inheritance Essential Questions: Why might polygenic traits vary more in phenotype than do single-gene traits?

Heterozygous phenotype is intermediate between the two ... Polygenic traits are produced by two or more genes. Order of dominance: brown green blue. ...

Human Traits A pedigree chart, which shows the relationships within a family, can be used to help with this task. Many human traits are polygenic (controlled by many ...

Chapter 15 Human Variation and Adaptation Key Terms monogenism Theory that all humans were descended from a original pair of humans. polygenism Theory that all humans ...

Genes which cause X, rather than genes which cause variation in X ... This plausibly holds quite often. Polygenic Traits. 1 Gene. 3 Genotypes. 3 Phenotypes ...

Genetics the branch of Biology that focuses on heredity. Gregor Mendel ... Roan horse. Human blood types. Patterns of Inheritance. Polygenic traits ...

Human Pedigree and Genetic Disease Gregor Mendel Thomas Bayes Common Pedigree Symbols Common Pedigree Symbols Mistakes in Meiosis Polygenic Inheritance Most human ...

Each cell contributes to the homeostasis of the tissue, organ and ... Taster trait for 'PTC') Polygenic = Trait coded for by more than one gene (ex. Skin color) ...

Have a binding cleft in a1 and a2 domains. Some highly polygenic. Usually limited polymorphism ... Associates with b2m and transferrin receptor ...

Ch. 12-13: Human Heredity. Vocabulary: Karyotype. Sex chromosome. Autosome. Pedigree. Polygenic ... KARYOTYPE. Karyotypes. A karyotype can tell you THREE things: ...

Animal Breeding and Genetics Instructor: Dr. Jihad Abdallah Simply inherited and polygenic Traits Different breeding approaches Different breeding approaches are used ...

Many human traits are controlled by polygenic inheritance, such as hair and eye color. ... determine the sex of an organism are XX in females and XY in males. ...

Easy traits to manipulate via GMO techniques are single gene ... breeding can manipulate multiple traits simultaneously ... loci of a polygenic character. ...

This is called pleiotropy. A single trait may be influenced by many genes; these traits are polygenic. A single gene may have multiple alleles.

To establish genetic relationships between the Phaseolus species. To tag more easily polygenic characters ... Drought, Heat, CBB, Leafhopper, Bruchid. P. acutifolius ...

Ch 11 Definitions 2. Situation in which both alleles of a gene ... Polygenic traits. Structure containing four chromatids that forms during meiosis. Tetrad ...

Some can bind b2m. Have a binding cleft in a1 and a2 domains. Some highly polygenic ... Bind b2m and non-peptide antigen in binding cleft. TH0/CTL. Th1/CTL. TH1 ...

Objectives: 1) Define through example sex-linked traits and polygenic inheritance. ... SIZE IN MOUNTAIN SHEEP, MALE PATTERN BALDNESS, AND FEATHER COLOR IN PEACOCKS ...

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