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18 Cards in this Set
- Front
- Back
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Selective Breeding |
Process of choosing and breeding spefific organisms for particular physical features or behaviours. |
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True Breeding |
Organisms that are homozygous for a particular trait or set of traits and produce offspring that exhibit the same characteristics generation after generation. |
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Monohybrid cross |
Cross of two individuals that differ in one trait. |
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Dominant |
A trait that always appears in an indivdual that is either heterozygous(Aa) or homozygous (AA) for that trait |
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Recessive |
A Type of trait that does not appear in an indivudual that is heterozygous. |
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Complete dominance |
A condition in which the dominant allele of a gene completely conceals the presence of the recessive allele of a gene. An individual with one recessive and one dominant allele has the same observable physical characteristic as an individual with two dominant alleles. |
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Law of Segregration |
All individuals have two copies of each factor (gene), these copies sperate randomly during gamete formation and each gamete recieves one copy of every gene. |
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Genotype |
A combination of alleles for any given trait. |
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Phenotype |
A visible physical and physiological traits of an organism |
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Homozygous |
an individual with two identical allels for a trait (AA or aa) |
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Heterozygous |
An individual with two different alleles for a trait (Aa) |
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Punnett square |
Simple grid used to iliustrate all possible combinations of simple genetic crosses. |
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Test Cross |
Cross of an individual of unknown genotype with a homozygous recessive individual , used to determine the unknown genotype. |
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Dihybrid Cross |
Cross of two individuals that differ in two traits. |
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Law of Independent assortment |
Mendel's second law. States that two alleles for one gene assort independently of the alleles for other genes during gamete formation. |
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Incomplete dominance |
A condition where neither of the two alleles for the same gene can completely conceal the presene of the other. |
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Co-dominance |
a situation where two alleles may be expressed equally. When two different alleles for a trait are both dominant. |
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Chromosome theory of inheritance |
A theory that genes are carried on chromosomes. |
