Genetics
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 parents to offspring.
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| trait | Each different form of a characteristic.
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| genetics | The scientific study of heredity.
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| fertilization | A new organism begins to form when an egg and sperm join in this process.
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| purebred | The offspring of many generations that have the same traits.
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| gene | The factors that control a trait.
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| alleles | The different forms of a gene.
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| dominant allele | An allele 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 | An organism that has two different alleles for a trait.
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| probability | A number that describes how likely it is that a certain event will occur.
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| Punnett square | A chart that shows all the possible combinations of alleles that can result from a genetic cross.
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| phenotype | An organism's physical appearance, or visible traits.
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| genotype | An organism's genetic makeup, or allele combination.
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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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| codominance | The alleles are neither dominant nor recessive; therefore, both alleles are expressed in the offspring.
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Created by:
tsheldon
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