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20 Cards in this Set
- Front
- Back
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Heredity |
is the passing of physicalcharacteristics from parents to offspring. |
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Trait |
Each different form of a characteristic, such as stemheight or seed color, is called |
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Genectics |
the scientificstudy of heredity |
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fertizalition |
A new organism begins to form whenegg and sperm join in the process called |
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purebred |
organism is the offspring of many generationsthat have the same trait. |
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Alleles |
are the differentforms of a gene. |
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gene |
forthe factors that control a trait. |
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hybrid |
organism has two different alleles for atrait. |
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dominant allele |
is one whose traitalways shows up in the organism when the allele is present. |
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recessive allele |
is hidden whenever thedominant allele is present. |
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probability |
to predict the results of a particular event. |
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Punnett square |
is a chart that shows all the possiblecombinations of alleles that can result from a genetic cross. |
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homozygous |
An organism that has two identical alleles for atrait is said to be |
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heterozygous |
An organismthat has two different alleles for a trait is |
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heterozygous |
An organismthat has two different alleles for a trait is |
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codominance |
For some alleles, an inheritance patterncalled |
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phenotype |
isits physical appearance, or visible traits. |
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genotype |
its genetic makeup, or allele combinations. |
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Meiosis |
isthe process bywhich the number of chromosomes is reducedby half to form sex cells—sperm and eggs. |
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Chromosome |
are made up of many genesjoined together like beads on a string. |
