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28 Cards in this Set
- Front
- Back
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Recessive allele |
An allele that cane be masked or hidden |
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Dominant allele |
An allele that is always shown if present |
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Allele |
Alternative form of a gene |
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Homozygous |
Alleles are the same |
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Heterozygous |
Alleles are different |
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Genetics |
The study of genes |
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The law of segregation |
States that alleles for different traits will be randomly distributed in gamete formation |
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The law of segregation |
Sates that alleles will separate during meiosis |
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Phenotype |
Physical appearence |
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Genotype |
The alleles present in an organism |
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Hybrid |
Heterozygous alleles |
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Purebred |
Homozygous allele |
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Gene linkage |
Genes on the same chromosome |
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Genetic recombination |
New combination of genes crossing over and independent assortment |
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Polyploidy |
Extra sets of chromosomes |
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Carrier |
Heterozygous organism who does not express a hidden allele |
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Pedigree |
Diagram showing the inheritance of a trait through several generations |
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Incomplete dominance |
Neither allele is dominant to the other heterozygous organism shows a blending of the two alleles |
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Codominance |
Neither allele is dominant to the other; heterozygous organism shows both of the alleles |
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Multiple alleles |
More than 2 alleles |
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Epistasis |
Variety caused by one gene hiding the effects of another gene |
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Sex chromosome |
Boy or girl chromosome |
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Autosome |
An chromosome other than the sex chromosome |
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Sex linked traits |
Trait whose genes are located on the sex chromosome |
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Polygenic trait |
A trait influenced by more than one gene |
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Karyotype |
A micrograph of all an organism chromosomes ordered by decreasing order Size |
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Telomere |
Protective cap on the end of a Chrome zone, Shortens with every replication of dna |
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Nondisjuction |
Too many or too few chromosomes caused by spindle fiber failure and meosis |
