Matching Pairs Mendel Genetics VocabOnline version Genetics vocabulary words and examples by alicia ussery 1 A characteristic of an organism that is determined by many genes 2 Two different alleles of a particular gene present in an individual EX- Rr 3 The expressed form of the allele. 4 Two of the same alleles of a particular gene present in an individual EX: RR, rr 5 Phenotype 6 The offspring of the F1 Generation 7 Recessive 8 Pedigree 9 A diagram that predicts the outcome of a genetic cross 10 P Generation 11 the science of heredity - traits are passed down from parents to offspring 12 Monohybrid Cross 13 The likelihood that a specific event will occur 14 The different versions of a gene 15 Sex-Linked Gene 16 Law of Segregation 17 Law of Independent Assortment 18 The passing of characteristics from parents to offspring 19 Test Cross 20 Multiple alleles 21 The offspring of the P Generation 22 The displaying of a phenotype that is intermediate (a mix) between parents. 23 When two dominate alleles are expressed at the same time Incomplete Dominance An individual whose phenotype is dominant, but whose genotype is not known, is crossed with a homozygous recessive individual. Probability Alleles Homozygous A trait that is not expressed when the dominant trait is present. Genetics Polygenic Inheritance The alleles of different genes separate independently of one another The physical appearance of a character EX: brown hair, green eyes, etc. A cross that involves ONE pair of contrasting traits. A family history that shows how a trait is inherited over several generations Codominance genes with more than two alleles EX: blood type F1 Generation The parental generation - original two individuals that are crossed during a breeding experiment. Heterozygous Two alleles for a character segregate when gametes are formed. F2 Generation A trait that is determined by a gene found on one of the sex chromosomes, such as the X chromosome. Heredity Dominant Punnett Square
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