Cells and Heredity-The Science of Heredity: Chapter 3 Lesson 1-4 Vocabulary
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Heredity | The passing of physical characteristics from parent to offspring.
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| Trait | Each specific character, such as stem height or seed color.
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| Genetics | The scientific study of heredity.
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| Fertilization | A new organism begins to form when egg and sperm cells join.
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| Purebred | The offspring of many generations that have the same form of a trait.
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| Gene | Describe the factors that control a trait.
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| Alleles | The different forms of a gene.
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| Dominant Allele | One whose trait always shows up in the organism when the allele is present.
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| Recessive Allele | Hidden whenever the dominant allele is present.
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| Hybrid | Has two different alleles for a trait.
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| Probability | A number that describes how likely it is that an event will occur.
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| Punnett Square | A chart that shows all the possible ways alleles can combine in a genetic cross.
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| Phenotype | The physical appearance, or visible traits.
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| Genotype | Genetic makeup, or alleles.
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| Homozygous | An organism that has two identical alleles for a trait.
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| Heterozygous | An organism that has two different alleles for a trait.
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| Incomplete Dominance | Occurs when one allele is only partially dominant.
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| Codominance | Occurs when both alleles for a gene are expressed equally.
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| Multiple Alleles | Three or or possible alleles determine the trait.
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| Polygenic Inheritance | Occurs when more than one gene affects a trait.
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
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