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Chapter 12 College Prep Biology
Chapter 12 College Prep Biology

... Which one does not belong? Huntingdon’s disease, cystic fibrosis, PKU, taySachs disease. Huntington's disease b/c it is caused by an autosomal dominant allele, whereas the others are the result of autosomal recessive alleles.  Huntington’s – lethal disorder-results in a breakdown of certain areas ...
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CHAPTER OUTLINE

... Polygenic Inheritance Polygenic inheritance occurs when a trait is governed by two or more genes (sets of alleles). The result is a continuous variation of phenotypes. Skin Color Skin color is the result of pigmentation produced by cells called melanocytes in the skin and is an example of a polygeni ...
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Beyond Dominant and Recessive Alleles

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Genetics Quiz- Matching, Short answer

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... Polygenic Inheritance Problem Solving Petal length of a plant ranges from 4mm to 12mm to 20mm. Out of 770 plants, only 3 of them have 4mm petals. 1. Give one genotype for a plant with 12 mm petals. 2. Give two possible genotypes for plants with 6 mm petals 3. What proportion of plants have 14 mm p ...
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... Definition vague, but usually thought of as having multiple, possibly interacting loci, with unknown penetrances; and phenocopies. The terms polygenic and oligogenic are also used, but these do have more specific meanings. There is some evidence that using a range of made-up models can help map gene ...
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... and physics that enabled him to interpret his observations. •In his paper "Versuche über Pflanzenhybriden" ("Experiments in Plant Hybridization"), presented in 1865 to the Brunn Natural History Society, Gregor Mendel traced the inheritance patterns of certain traits in pea plants and showed that the ...
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... seeds (R) are dominant to wrinkled seeds (r). A plant that is heterozygous for both traits is crossed with a plant that is heterozygous for flower color and has wrinkled seeds. Draw a Punnett Square illustrating this cross and list the genotype and phenotype ratios expected in the offspring. ...
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... 7. Why are sex linked traits more common in males? 8. What are polygenic traits, give two examples of these types of traits in humans. 9. Know how to use the product rule to predict probabilities of consecutive events. 10. You MUST know how to carry out all types of crosses that we have done.  Mono ...
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... • Gregor Mendel 1822 – 1884 was a priest and scientist, and is often called the father of genetics for his study of the inheritance of certain traits in pea plants. Mendel showed that the inheritance of these traits follows particular laws. ...
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... the same characteristic are inherited (for example rr or bb)  phenotype: an organism’s inherited physical appearance (blue eyes, tall, curly hair)  genotype: the inherited combination of alleles (BB, Tt)  DNA: hereditary material that controls all the activities of a cell  probability: the mathe ...
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12.2 Complex patterns of inheritance

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Thursday, March 11, 2010
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... Gene Interactions and the Environment Describe areas where NATURE vs NURTURE has an effect of an individuals characteristics. Gene Linkage “Linkage Groups” Copy Punnett Square – Figure 6.18 Copy Possible Gametes during Meiosis – Figures 6.19 and 6.20 Understand how the predicted Mendelian outcomes a ...
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Quantitative trait locus

A quantitative trait locus (QTL) is a section of DNA (the locus) that correlates with variation in a phenotype (the quantitative trait). The QTL typically is linked to, or contains, the genes that control that phenotype. QTLs are mapped by identifying which molecular markers (such as SNPs or AFLPs) correlate with an observed trait. This is often an early step in identifying and sequencing the actual genes that cause the trait variation.Quantitative traits are phenotypes (characteristics) that vary in degree and can be attributed to polygenic effects, i.e., the product of two or more genes, and their environment.
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