Chapter 6: Chromosome Mutations Flashcards
define aneuploidy
variations in a specific chromosome
define euploidy
complete haploid sets of chromosome are present
multiples of n
define polyploidy
more than two sets of chromosomes are present
more than 2 multiples of the haploid chromosome are found
nondisjunction is the…
disruption of the normal distribution of chromosomes into gametes
Monosomy is a type of _______ and is defined as the…..
aneuploidy
loss of one chromosome
haploinsufficiency
when a single recessive gene is insufficient to provide life-sustaining function for an organism
a trisomy is the
addition of a chromosome
autopolyploidy is the…
addition of one or more sets of chromosomes identical to the haploid compliment of the species
allopolyploidy is the…
combination of chromosome sets from different species
hybridization
what type of chromosomes aberrations change the total amount of genetic information in chromosomes?
- deletions
- duplications
what type of chromosomes aberrations rearranges the genetic material but the information stays the same?
inversions
translocations
translocations occur between
nonhomologous chromosomes
terminal deletions occur…
near one end of the chromosome
intercalary deletions occur…
from the interior of a chromosome
a paracentric inversion…
does not include centromere