Genetics: The Science of Heredity
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Heredity
Trait
GeneticsPurebredGeneAlleleDominant alleleRecessive alleleHybrid Punnett squarePhenotypeGenotypeHomozygousHeterozygousIncomplete dominanceCodominnaceMultiple allelesPolygenic inheritance Meiosis –
Genetics: The Science of Heredity
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HeredityTraitGeneticsPurebredGeneAlleleDominant alleleRecessive alleleHybrid Punnett squarePhenotypeGenotypeHomozygousHeterozygousIncomplete dominanceCodominnaceMultiple allelesPolygenic inheritance Meiosis -
Genetics: The Science of Heredity
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HeredityTraitGeneticsPurebredGeneAlleleDominant alleleRecessive alleleHybrid Punnett squarePhenotypeGenotypeHomozygousHeterozygousIncomplete dominanceCodominnaceMultiple allelesPolygenic inheritance Meiosis –
Genetics: The Science of Heredity
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HeredityTraitGeneticsPurebredGeneAlleleDominant alleleRecessive alleleHybrid Punnett squarePhenotypeGenotypeHomozygousHeterozygousIncomplete dominanceCodominnaceMultiple allelesPolygenic inheritance Meiosis –
Genetics: The Science of Heredity
1. Heredity- the passing of traits from parents to offspring
2. Trait-a specific characteristic that an organism can pass to its offspring through its genes
3. Genetics- the scientific study of heredity
4. Purebred- an offspring of many generations that has the same form of a trait
5. Gene-a sequence of DNA that determines a trait and is passes from parent to offspring
6. Allele- the different forms of a gene
7. Dominant allele-an allele whose trait always shows up in the organism when the allele is present
8. Recessive allele- an allele that is hidden whenever the dominant allele is present
9. Hybrid –an offspring of crosses that has two different allele for a trait
10. Punnett square- a chart that shows all the possible combination of alleles that can result from a genetic cross
11. Phenotype- an organisms physical appearance or visible traits
12. Genotype- an organisms genetic makeup, or allele combinations
13. Homozygous- have two identical alleles for a particular gene
14. Heterozygous- having two different alleles for a particular gene
15. Incomplete dominance-a situation in which one allele is not completely dominant over another allele
16. Codominance-a situation in which both alleles for a gene are expressed equally
17. Multiple alleles- there or more possible alleles of a genet that determines a trait
18. Polygenic inheritance – the inheritance of traits that are controlled by two or more genes, such as height in
humans.
19. Meiosis – the process that occurs in the formation of sex cells by which the number of chromosomes is reduced
to half