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16 Cards in this Set
- Front
- Back
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define heredity: |
transmission of traits from one generation to the next |
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define trait: |
a variant of a character, such as purple or white flowers |
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define a characteristic: |
an observable, heritable feature such as hair color or eye color |
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define phenotype |
the physical traits of an organism which are determined by its genotype |
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define genotype: |
the genetic makeup of an organism |
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define gene: |
a hereditary unit consisting of a sequence of DNA that occupies a specific location on a specific chromosome and determines a particular characteristic in an organism |
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define allele: |
a specific form of a gene which determines a particular trait |
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define monohybrid cross: |
a cross between organisms, used to study the inheritance of ONE character |
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define hybrid: |
the offspring of a cross between unlike parents |
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define locus: |
a genes specific location along the length of a chromosome |
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define homozygous: |
having two identical alleles for a particular gene |
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define heterozygous |
having two different alleles for a particular gene |
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All ____ genes are represented by ____ alleles |
single, two |
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what is the law of segregation? |
two alleles for a single character segregate during gamete formation and end up in different gametes. |
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what is the law of independent assortment? |
each pair of alleles segregate independently of other pairs of alleles during gamete formation. |
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what is a dihybrid cross? |
a cross between two different genes that differ in two observed traits |
