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Chapter 11 Section 3 Exploring Mendelian Genetics

Chapter 11 Section 3 Exploring Mendelian Genetics. Biology Pgs. 270-274. Objectives. ______________the principle of independent assortment. ____________the other inheritance patterns _____________how Mendel’s principles apply to organisms. . Explain. Describe. Explain.

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Chapter 11 Section 3 Exploring Mendelian Genetics

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  1. Chapter 11 Section 3Exploring Mendelian Genetics Biology Pgs. 270-274

  2. Objectives ______________the principle of independent assortment. ____________the other inheritance patterns _____________how Mendel’s principles apply to organisms. Explain Describe Explain

  3. The alleles for seed shape segregated independently of those for seed color. This principle is known as________________________. • Genes that segregate independently do not influence each other's inheritance. independent assortment

  4. The principle of independent assortment states that genes for different traits can segregate independently during the formation of____________________. • Independent assortment helps account for the many genetic variations observed in plants, animals, and other organisms. gametes

  5. A Summary of Mendel's Principles • Genes are passed from ________________________to their offspring. • If two or more _______________________of the gene for a single trait exist, some forms of the gene may be dominant and others may be recessive. parents forms (alleles)

  6. Some alleles are neither dominant nor recessive, and many traits are controlled by ________________________or multiple genes. • Incomplete Dominance  • When one allele is not completely dominant over another it is called____________________________. multiple alleles incomplete dominance

  7. Codominance • In______________________, both alleles contribute to the phenotype. • Multiple Alleles  • Genes that are controlled by more than two alleles are said to have_______________________ codominance multiple alleles.

  8. Polygenic Traits • Traits controlled by two or more genes are said to be___________________________ • ________________________in humans is a polygenic trait controlled by more than four different genes. polygenic traits. Skin color

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