Quiz3
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19 terms
Terms | Definitions |
|---|---|
Allele | One of two or more alternative forms of the same gene. Alleles occupy the same site (locus) on homologous chromosomes |
One of two or more alternative forms of the same gene | Allele |
Cross | The bringing together of genetic material from different individuals in order to achieve genetic recombination |
Crossing-over | The reciprocal exchange of corresponding segments of genetic material between chromatids of homologous chromosomes during prophase I of meiosis |
Dominant allele | The allele that produces its full effect even though its contrasting allele is present |
Epistasis | A form of genetic interaction whereby one gene interferes with the phenotypic expression of another gene so that the phenotype is determined effectively by the epistatic gene and not the latter gene when both occur in the genotype |
Gene | A unit of hereditary information located on a chromosome |
A unit of hereditary information located on a chromosome | Gene |
Genotype | The genetic makeup of the individual |
The genetic makeup of the individual | Genotype |
Heterozygous | Having different alleles at the same locus on homologous chromosomes. |
Homozygous | Having identical alleles at the same locus on homologous chromosomes. |
Hybrid | An individual that is heterozygous for one or more paires of genes |
Incomplete dominance | The condition that results when two different alleles produce an effect intermediate between the effects of these same alleles in the homozygous condition. |
Linkage | The tendency for certain genes to be inherited together because they are located on the same chromosome |
Locus | The site of a gene on a chromosome |
The site of a gene on a chromosome | locus |
The physical appearance of he individual resulting from its genetic makeup | Phenotype |
Recessive allele | The allele that is masked or will not produce its effect in the presence of the dominant or contrasting allele |
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