Details

Title: chapter 11

Description: chromosomes and human genetics

Total Flash Cards: 18

Created: 11/22/2008 20:00:56

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Term
autosomes
 Definition
all chromosomes except for sex chromosomes (X and Y); the same in both sexes
Term
# of genes in human Y chromosome
 Definition
330
Term
# of genes in human X chromosome
 Definition
2062
Term
master gene for male sex determination
 Definition
SRY
Term
linkage group
 Definition
all the genes on one chromosome
Term
pedigrees
 Definition
charts of genetic connections among individuals
Term
genetic disoreder
 Definition
a heritable condition that eventually gives rise to mild to severe medical problems
Term
syndrome
 Definition
set of symptoms that characterizes each abnormality or disorder
Term
disease
 Definition
illness that results from an infection, dietary problems, or environmental factors (not from a heritable mutation)
Term
duplication
 Definition
structural change in chromosomes where gene sequences are repeated
Term
alteration
 Definition
part of the gene sequence is reversed
Term
deletion
 Definition
loss of a portion of the chromosome
Term
translocation
 Definition
a broken part of a chromosome is attached to a different one; typically reciprocal--both chromosomes exchange broken parts
Term
aneuploidy
 Definition
having one extra or one less chromosome
Term
polyploidy
 Definition
having three or more of each type
Term
nondisjunction
 Definition
one or more pairs of chromosomes don't seperate during mitosis or meiosis
Term
trisonomic
 Definition
having three of one type of chromosome and two of every other
Term
monosomic
 Definition
having one of of type of chromosome and two of every other