Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
22 Cards in this Set
- Front
- Back
|
a segment of the chromosome turned around 180 within a chromsome
|
Inversion
|
|
|
requires a break at 2 points in the chromosome and then a reinsertion of the segment
|
inversion
|
|
|
true or false, heterozygotes that have inversion may produce abnormal offspring, will this have an affect on the offspring?
|
Yes
|
|
|
centromere is not part of the rearranged chrom. segment
|
Paracentric inversion
|
|
|
results in dicentric and acentric production of chromatids
|
paracentric inversion
|
|
|
What happens to the dicentric chromatid during anaphase?
|
chromatids move in either direction
|
|
|
what happens to the acentric chromatid during anaphase?
|
it is lost or moves randomly to one pole or the other during anaphase.
|
|
|
when centromere is part of the inverted segment
|
paricentric inversion
|
|
|
movement of a chromosome segment to a new location
|
translocation
|
|
|
an exchange that occurs between two non-homologous chromosomes. Genetic information is not lost or gained, but there is a rearrangement of genetic material.
|
Reciprocal translocations
|
|
|
occur when a chromosome breaks in one or more places and a portion is lost
|
deletion
|
|
|
during deletion, the segment of the chromosome that still has a centromere, will is be maintained or lost?
|
maintained
|
|
|
deletions that occur in the interior of the chromosome
|
intercalary
|
|
|
deletions that occur at the ends of chromosomes
|
terminal
|
|
|
occur when any part of a chrom. is present more than once in a genome
|
duplication
|
|
|
when are compensation loops formed?
|
in deletions and duplications
|
|
|
what do compensation loops do?
|
they match homologous chroms. for synapsis
|
|
|
True or false? Duplications occur because of unequal crossing over or through a replication error prior to meiosis?
|
True
|
|
|
Gene Family
|
groups of continuous genes who products perform the same functino
|
|
|
true or false, duplications can produce gene families?
|
true
|
|
|
occurs when breaks happen at the ends of the short arms of two non-homologous chromosomes. The small segments are lost and the larger segments fuse together at the centromeric region
|
robertsonian translocation
|
|
|
a translocation between chromosome 9 and 22 that is associated with myelogenous leukemia
|
Phyladelhia chromosome
|
