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Chapter 15
Study cards for LIFE 102 at CSU
17
Biology
Undergraduate 1
04/16/2015

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Term
Chromosome Theory of Inheritance
Definition
Genes have specific loci
Chromosomes undergo segregation and independent assortment
Term
Loci
Definition
The specific position of a gene on a chromosome
Term
Wild Type
Definition
Normal phenotype that is most commonly observed in nature
Term
Mutant Phenotype
Definition
Anything other than wild type
Term
Sex-Linked Gene
Definition
A gene located on either sex chromosome
Term
Sex-Linked Dominate
Definition
Women will have it with just one allele for it, and men will have it if their one X chromosome has the dominate allele
Term
Sex-Linked Recessive
Definition
Women will need two, or will be carriers, men will have it if their one X chromosome has the recessive allele
Term
Carrier
Definition
A person that has a recessive allele for a genetic trait or mutation but does not display that trait or show symptoms of the disease
Term
Barr Body
Definition
The inactive X in each cell of a female condenses into a compact object
Term
Linked Genes
Definition
Genes located on the same chromosome that tend to be inherited together
Term
Linkage Map
Definition
A genetic map of a chromosome based on recombination frequencies
Term
Genetic Map
Definition
An ordered list of the genetic loci along a particular chromosome
Term
Cytongenetic Maps
Definition
Indicate the positions of genes with respect to chromosomes features
Term
Nondisjunction
Definition
Pairs of homologous chromosomes do not separate
Term
Aneuploidy
Definition
An extra or missing chromosome due to nondisjunction
Term
Monosomy X
Definition
Turner Syndrome
XO females who are sterile
Term
Genomic Imprinting
Definition
The epigenetic phenomenon by which certain genes are expressed in a parent-of-origin-specific manner
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