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Download 1. Offspring that are the result of mating between two genetically
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1. 2. 3. 4. 5. 6. Offspring that are the result of mating between two genetically different kinds of parents--the opposite of purebred. 2 different alleles in the gene pair The study of gene structure and action and the patterns of inheritance of traits from parent to offspring. A 19th century central European monk scientist who published his ideas about genetics in 1866 but largely went unrecognized until 1900, which was long after his death. He acquired his understanding of genetics mostly through pea plant breeding experiments. Offspring that are the result of mating between genetically similar kinds of parents--the opposite of hybrid. Units of inheritance usually occurring at specific locations on a chromosome. These units are responsible for hereditary characteristics in plants and animals. They “code” for a specific trait. Alternate forms of the same gene. Because they are different, their action may result in different hybrid genetics Gregor Mendel purebred genes alleles expressions of a trait. (brown eyes, blue eyes, green eyes, etc) 7. The genetic makeup of an individual for a trait or for all of his/her inherited traits—not the observable or detectable characteristics. Can’t see the genotype, it is the gene pair for a trait. Bb or BB or bb 8. A genotype consisting of two identical alleles of a gene for a particular trait. BB or bb 9. A genotype consisting of two different alleles of a gene for a particular trait. Bb 10. The observable or detectable characteristics of an individual organism; the detectable expression of a genotype. Brown eyes, dimples, widows peak. It’s a trait you can see. 11. The general term for an allele that masks the presence of another allele in the phenotype. 12. The general term for an allele that is masked in the phenotype by the presence of another allele. genotype homozygous genotype heterozygous genotype phenotype dominant allele recessive allele Study Guide For Genetics Test A simple graphical method of 1. showing all of the potential combinations of offspring genotypes that can occur and their probability given the parent genotypes. This system involves the use of a tic-tac-toe square. It was named after pioneer British geneticist. The term for a genotype in which 2. there are two dominant alleles. The term for a genotype in which 3. there are two recessive alleles. Punnett square homozygous dominant homozygous recessive Experiment by Gregor Medel: He tested Pea Plants to study the laws of inheritance and genetics. Outcome of first 3 generations: 1. P Generation – Crossed 2 purebred plants, 1 homozygous dominant and 1 homozygous recessive 2. F1 - 2nd generation all hybrid plants 3. F2 - 3rd generation 3 showed dominant trait, 1 showed recessive trait.