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Biology 11 Ch 6.1-3

Genetic Processes: Chapter 6.1 - 6.2 - 6.3

QuestionAnswer
incomplete dominance a condition in which neither allele for a gene completely conceals the presence of the other; it results in intermediate expression of a trait
co-dominance the condition in which both alleles for a trait are equally expressed in a heterozygote; both alleles are dominant heterozygous advantage
multiple alleles a gene with more than two alleles
polygenic inheritance a trait that is controlled by more than one gene
continuous variation a range of variation in one trait resulting from the activity of many genes
linked genes genes that are on the same chromosome and that tend to be inherited together
linkage group all genes on any one chromosome
chromosome mapping the process used to determine the relative location of genes on chromosomes
sex-linked trait a trait controlled by genes on the X or the Y chromosome
X-linked & Y-linked a trait found on either the X chromosome or the Y chromosome
Barr bodies structure in the female cell in which one of the X chromosomes is inactive. The inactive X chromosome is tightly condensed
inactive X chromosome a Barr body
genome the complete sequence of nucleotides in an organism
bioinformatics a field of study that deals with using computer technology to create and analyze large databases of information
genomics the study of genomes and the complex interactions of genes that result in phenotypes
genetic profile the complete genotype of an individual, including various mutations
single nucleotide polymorphism (SNP) a type of genetic variation that results from changes in the DNA at single locations.
proteome all of the proteins in an organism
proteomics the study of the three-dimensional shape and function of all cellular proteins
epigenetics the study of how changes in the inheritance of certain traits or phenotypes are based on changes to gene function and not to changes in DNA sequence
epigenome cellular material that is not part of the genome but influences whether a gene is “turned on” or “turned off ”
microarrays a technique used to study differences in gene activity of DNA
heterozygous advantage a situation in which heterozygous individuals have an advantage over both homozygous dominant and homozygous recessive individuals
Created by: marsenault