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Chapter 5

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Term
Definition
allele   the different form of a trait that a gene may have  
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phenotype   the way an organism looks or behaves  
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genotype   an organism's genetic makeup  
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heredity   passing of traits from parents to offspring  
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dominant   a trait that can cover up another form of the trait  
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Punnett square   a tool used to predict the probability of traits  
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recessive   describes a trait that is covered over or hidden  
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genetics   study of how traits are inherited through the action of alleles  
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polygenic inheritance   occurs when a group of gene pairs acts together to produce a trait, such as human eye color  
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heterozygous   describes an organism with different alleles for a trait (example: Tt); also called a hybrid  
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homozygous   describes an organism with two alleles that are the same for a trait  
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hybrid   an offspring that was given different genetic information for a trait from each parent  
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incomplete dominance   production of a phenotype that is intermediate or a blend of two homozygous parents  
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genetic engineering   biological and chemical methods to change the arrangement of a gene's DNA  
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sex-linked gene   an allele inherited on a sex chromosome that can cause a disorder, such as color blindness  
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Created by: jrobertson1
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