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9 terms

Chapter 7 vocab- Bio

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Carrier
Organism whose genome contains a gene for a certain trait or disease that is not expressed in the organism's phenotype
Sex-linked gene
Gene that is located on a sex chromosome
X-chromosome activation
Process that occurs in female mammals in which one of the X chromosomes is randomly turned off in each cell
Incomplete dominance
Heterozygous phenotype that is a blend of the two homozygous phenotypes
Codominance
Heterozygous genotype that equally expresses the traits from both alleles
Polygenic trait
Trait that is produced by two or more genes
Linkage map
Diagram that shows the relative locations of genes on a chromosome
Pedigree
Chart of the phenotypes and genotypes in a family that is used to determine whether an individual is a carrier of a recessive allele
Karyotype
Image of all of the chromosomes in a cell