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Gregory MENDEL WHO? Father of Genetics = Pea Plants
Independent Assortment Genes that segregate independently, do NOT influence each other’s inheritance. Separate genes for separate traits are passed independently of one another from parents to offspring
Dominant vs. Recessive Traits
Some alleles are neither dominant nor recessive, and many traits are controlled by multiple alleles or multiples genes.
Incomplete Dominance Where one allele is not completely dominant over another. Heterozygous phenotype is somewhere in between the two homozygous phenotypes.
Codominance Both alleles contribute to the phenotype (physical characteristics). Both alleles are FULLY EXPRESSED.
Multiple Alleles Genes that have more than 2 alleles. More than 2 possible alleles exist in the population.
Polygenic Traits Traits controlled by two or more genes. Traits that are produced by the interaction of several genes.
The FOIL method is ONLY used when finding the gametes from parents with two traits. Use the FOIL method to find the gametes: (RrYy)
(R + r)(Y + y). F tells you to put the FIRST of the two traits’ alleles together. RY
(R + r)(Y + y). O tells you to put the OUTER alleles together. Ry
(R + r)(Y + y). I tells you to put the INNER alleles together. rY
(R + r)(Y + y). L tells you to put the LAST alleles together. ry
Remember, FOIL reminds you to match up the: F irst alleles O uter alleles I nner alleles L ast alleles
1 Father of genetics. Studied traits in pea plants.
Other Patterns of Inheritance. Mendel’s Laws of Inheritance 1.The Law of Segregation 2.The Law of Independent Assortment 3.The Law of Dominance.
WHAT IS PROBABILITY? Punnett Squares & Probability.
Mendels Laws. What we already know… Inheritable factors or genes are responsible for all heritable characteristics Phenotype is based on Genotype Each.
Section 11-3 Exploring Mendelian Genetics Wanted To Know If: Segregation Was Truly Independent or Does The Segregation Of One Pair Of Alleles Affect.
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11-3 Exploring Mendelian Genetics. Independent Assortment The 2 Factor Cross: F1 RRYY x rryy What does it give us? The 2 Factor Cross: F2 What does it.
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11-3: Exploring Mendelian Genetics Objectives: Explain the principle of independent assortment. Describe the inheritance patterns that exist aside.
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What laws did Mendel develop? How do genes influence the development of traits?
Objective The student will be able to: Find the alleles for a Dihybrid cross using the FOIL method, and the Box method.
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1. What is genetics The study of heredity 2. Gregor Mendel used pea plants to study what? inheritance.
Who was Gregor Mendel (biographical information)? What did he study? Why did he use pea plants for his research? What were his results? What.
Exploring Mendelian Genetics 11.3 Biology Mr. Hines.
Section 1 Mendel’s Legacy Chapter 9 Gregor Mendel The study of how characteristics are transmitted from parents to offspring is called genetics.
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Genetics College Biology. Gregor Mendel Mid 1800’s, Austrian monk. Introduced probability to genetics Mated pea plants.
11-3 Exploring Mendelian Genetics Page 270. Think about it…. Mendel wondered if alleles sorted independently… ….for example… “…is the gene for green/yellow.
Mendel’s Theory Section 8-2 Ag Biology. Before Mendel’s Experiments People thought that offspring were a blend of the parents characteristics. Example.
Warm – Up 12/22 What is an Allele? Compare Dominant vs. Recessive What is the difference between heterozygous and homozygous?
7.2 Complex Patterns of Inheritance KEY CONCEPT Phenotype is affected by many different factors.
11–3 Exploring Mendelian Genetics Slide 1 of 31 Copyright Pearson Prentice Hall Independent Assortment To determine if the segregation of one pair of alleles.
Genetics and Mendel. Mendel’s Work Mendel’s pea experiments led him to conclude that inheritance is determined by factors (genes) passed from one generation.
Genetics. Gregor Mendel: Father of Genetics Genetics: study of heredity Heredity: passing traits from parent to offspring Used peas to study heredity.
Bell Ringer: (5 min.). Section 11-3: Exploring Mendelian Genetics.
Heredity!!! Passing on traits from parents to offspring.
Independent Assortment- Genes that segregate (separately) independently do not influence each other's inheritance. The principle of independent.
Incomplete Dominance & Codominance Section 11-3 in Book.
1 Vocabulary Review GENETICS. 2 Study of how characteristics are transmitted from parent to offspring GENETICS.
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Mendels Laws of Heredity Why we look the way we look...
GENETICS. Mendel and the Gene Idea Genetics The study of heredity. The study of heredity. Gregor Mendel (1860’s) discovered the fundamental principles.
Exploring Mendelian Genetics Independent Assortment Mendel wondered if the segregation of one pair of alleles affect the segregation of another.
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Notes # 8: Chapter 14 Mendel and the Gene Idea I. General Genetics Terms A) Trait: characteristic that can be inherited B) Allele: Alternate forms of.
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EXCEPTIONS TO THE RULES. REVIEW OF MENDEL’S PRINCIPLES Genes are passed parents offspring; get one allele from each parent.
Genetics Since Mendel. I. Independent Assortment A. Monohybrid crosses 1. Mendel’s 1 st crosses using the genes for one trait B. Dihybrid crosses 1. Mendel’s.
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