Chapter 15 Flashcards
Genetic recombination
Genetic recombination (also known as genetic reshuffling) is the exchange of genetic material between different organisms which leads to production of offspring with combinations of traits that differ from those found in either parent.
Parental types
Matching offspring
Nondisjunction
Members of a pair of homologous chromosomes don’t split during meiosis
Aneuploidy
Zygote has an abnormal number of a particular chromosome
Monosomic
Monosomy is the state of having a single copy of a chromosome pair instead of the usual two copies found in diploid cells
Trisomic
3 chromosomes
Polyploidy
Polyploidy, the condition in which a normally diploid cell or organism acquires one or more additional sets of chromosomes.
Deletion
A chromosomal fragment is lost
Duplication
When a broken fragment is reattached as an extra segment to a sister or non sister chromatid
Inversion
Fragment may reattach to original chromosome but in reverse orientation
Translocation
Fragment to join a non homologous chromosome