6. Chromosomal Variation

What is the name for a chromosomal rearrangement that causes a change in gene dosage?

Inversions cause what type of chromosomal rearrangement?

A chromosome with two centromeres is called what?

Write a short essay that discusses five altered phenotypes that result from specific chromosomal aberrations.

Define these pairs of terms, and distinguish between them.

aneuploidy/ euploidy

monosomy/ trisomy

Patau syndrome/ Edwards syndrome

autopolyploidy/ allopolyploidy

autotetraploid/ amphidiploid

paracentric inversion/ pericentric inversion

Predict how the synaptic configurations of homologous pairs of chromosomes might appear when one member is normal and the other member has sustained a deletion or duplication.