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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.
Section 11-3 Exploring Mendelian Genetics Wanted To Know If: Segregation Was Truly Independent or Does The Segregation Of One Pair Of Alleles Affect.
Genetics: Incomplete Dominance & Codominance Biology 12.
11-3 Exploring Mendelian Genetics
INTRODUCTION TO GENETICS
11-3: Exploring Mendelian Genetics Objectives: Explain the principle of independent assortment. Describe the inheritance patterns that exist aside.
Objectives: 1)Explain the principle of independent assortment. 2)Describe the inheritance patterns that exist aside from simple dominance. 3)Explain how.
Gregor Mendel Father of Modern Genetics. Gregor Mendel Father of modern Genetics.
Genetics. Cells-Nucleus-Chromosomes- DNA- Genes They are all found in a cell. They are all located in the body.
Gregor Mendel Humans have noticed family resemblances for thousands of years. Heredity- the passing of traits from parents to offspring, was used for.
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.
Chapter 11: Intro to Genetics 11-3 Other Patterns of Inheritance.
Height in Humans Height in pea plants is controlled by one of two alleles; the allele for a tall plant is the dominant allele, while the allele for a short.
Genetic Variation Vocabulary You Should Know: Dominant Recessive Homozygous Heterozygous Genotype Phenotype Monohybrid Cross (punnett squares) Bio book.
Genetics: Basic Inheritance Ch & 2. Genetics Genetics is the study of heredity. Genetics is the study of heredity. Traits are controlled through.
Genetics Review 23 How many pairs of chromosomes do humans have?
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