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Ch. 12 term

Ch. 12 terms

QuestionAnswer
a recognizable inherited feature or characteristic of an organism; in Mendelian heredity, a feature that exists in one of two or more possible variations called traits character
one of two or more possible forms of a character; a recognizable feature or characteristic of an organism trait
in biology, the offspring of a cross between parents that have differing traits; a cross between individuals of different species, subspecies, or varieties hybrid
the entire group of offspring produced by a given group of parents generation
one of the alternative forms of a gene that governs a characteristic, such as hair color allele
in genetics, describes an allele that is fully expressed whenever the allele is present in an individual dominant
in genetics, describes an allele that is expressed only when no dominant allele is present in an individual recessive
the entire genetic makeup of an organism; also the combination of genes for one or more specific traits genotype
an organism's appearance or other detectable characteristic that results from the organism's genotype and the environment phenotype
describes an individual that has identical alleles for a trait on both homologous chromosomes homozygous
describes an individual that carries two different alleles of a gene heterozygous
a graphic used to predict the results of a genetic cross Punnett square
the likelihood that a possible future event will occur in any given instance of the event; the mathematical ratio of the number of times one outcome of any event is likely to occur to the number of possible outcomes of the event probability
a diagram that shows the occurrence of a genetic trait in several generations of a family pedigree
an inherited disease or disorder that is caused by a mutation in a gene or by a chromosomal defect genetic disorder
a character that is influenced by more than one gene polygenic character
a condition in which both alleles for a gene are fully expressed codominance
in genetics, describes two or more genes that tend to be inherited together linked
Created by: lcallahan
 

 



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