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Definition
| one of a number of different forms of a gene (ex. blue eyes, brown eyes, green eyes) |
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| taking the pollen from one plant and fertilizing another plant to produce offspring that have two parents |
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| trait that is "stronger" that can typically be seen; represented by a capital letter |
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| process of male and female gametes (sperm and egg) joining to form a new cell |
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Definition
| reproductive cells; sex cells; sperm and egg |
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| chemical factor that determines traits that are passed from parent to offspring |
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| the scientific study of biological inheritance (heredity) |
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| the offspring of crosses of parents with different traits |
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| principle of dominance (11.1) |
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Definition
| this states that some alleles are dominant and others are recessive |
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Definition
| trait that typically does not express itself unless both alleles are for this trait; represented by a lower case letter |
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| separating of the two alleles for a trait during meiosis; one allele is on each haploid cell |
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Definition
| when an organism has male and female reproductive parts and can fertilize itself |
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Definition
| a specific characteristic such as hair color or height |
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Definition
| when two parents who are homozygous for the same trait have offspring that are identical to themselves |
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Definition
| the likelihood that something will happen |
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Term
| independent assortment (11.2) |
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Definition
| principle that states that genes for different traits can segregate (separate) independently during the formation of gametes |
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Definition
| physical traits; what the organism looks like |
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Definition
| having two identical (the same) alleles on a particular gene (ex. TT or tt) |
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Definition
| having two different alleles on a particular gene (ex. Tt) |
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Definition
| genetic make-up; what genes an organism has (looking at the letters) |
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| diagram used to determine what genetic combinations might result from a genetic cross |
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Definition
| section of DNA that determines a trait |
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Definition
| a gene that has more than one allele is said to have this |
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Definition
when BOTH alleles are dominant and BOTH traits are expressed (shown)
-ex. speckled chicken |
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Term
| incomplete dominance (11.3) |
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Definition
| when neither allele or trait is dominant and the phenotype is a blend of the two alleles (ex. a red flower crosses with a white flower to produce a pink flower) |
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Term
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Definition
| a trait controlled by more than one gene |
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