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19 Cards in this Set
- Front
- Back
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genetic cross between parents that are hybrids for two traits |
monohybrid |
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1. organism having two identical alleles for a trait |
homozygous |
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occurs when a single mutant gene affects two or more distinct and seemingly unrelated traits |
pleiotropy |
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1. alternative version of a gene |
alleles |
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1. physical appearance of an individual, based on gene alleles |
phenotype |
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organism having two different alleles for a trait |
heterozygous |
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1. allele whose expression is masked by other alleles |
recessive allele |
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1. particular location where a gene is found on a chromosome |
gene locus |
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1. phenotype where two alleles are each fully expressed in the presence of the other |
codominance |
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1. any chromosome other than a sex chromosome |
autosome |
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1. genes carried on the X chromosome but code for nothing to do with gender |
X-linked |
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genetic dominance exhibited when the heterozygote has a phenotype intermediate between those of the two homozygotes |
incomplete dominance |
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genetic cross between parents that are hybrids for only one trait |
homozygous |
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diagram used to calculate the results of a genetic cross |
Punnett square |
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type of inheritance that occurs when a trait is governed by two or more sets of alleles |
polygenic inheritance |
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a cross between F1 generation offspring with a homozygous recessive individual to determine F1 genotype |
testcross |
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allele able to mask the expression of other alleles |
dominant allele |
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an individual who appears normal but who is capable of having a child with a genetic disorder |
carriers |
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alleles an individual receives at fertilization |
genotype |
