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19 Cards in this Set
- Front
- Back
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Recessive (trait)
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The form of a trait that appears least often in offspring.
Usually represented by a lower case letter |
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Polygenic inheritance
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When a group of genes pairs act together to produce a single trait.
Eye and Hair color |
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Incomplete Dominance
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When both alleles are expressed in offspring.
A blending of traits. |
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Sex-linked gene (trait)
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Alleles inherited on a sex chromosome.
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Pedigree
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A tool used for tracing the occurance of a trait in a family.
Males represented by squares Females represented by circles |
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Genetic engineering
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The science of altering the genetic makeup of an organisms by deleting, adding or correcting genes.
AKA: Genetically Modified Organism |
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Probability
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THe mathematical chance that an event will occur
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Genome
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The "map" showing the location of individual genes on each chromosome.
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Multiple alleles
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A trait that has more than two alleles.
Blood type A,B,O |
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Punnett Square
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a tool used to predict results (alleles) of crosses of two parents
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Trait
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Any characteristic or condition resulting from the genetic make up of an organism
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Heredity
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The passing on of traits from parent to offspring.
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Alleles
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The different forms a gene may have for a trait.
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Genetics
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The study of how alleles (traits) affect generations of offspring.
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Genotype
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Letters that show the genetic make up of an organism
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Homozygous
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An organism with two alleles for a trait that are exactly the same.
RR or rr |
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Dominant (trait)
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The form of a trait that appears to mask another form of the same trait.
Usually represented by an upper case letter. |
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Phenotype
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The physical trait that shows as a result of a particular genotype.
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Heterozygous
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An organism that has two different alleles for a trait.
Rr |
