A) rearrangements occur frequently.
B) changes in chromosome number occur infrequently.
C) genetic instabilities produced by genomic changes usually are at a selective disadvantage.
D) genetic imbalances are often at a selective advantage.
E) DNA replication has evolved to handle only a specific number of chromosomes.

A) alternate
B) adjacent-1
C) adjacent-2
D) nondisjunction
E) triploid

A) related species almost always have the same karyotype.
B) total DNA content varies widely between individuals within the same species.
C) closely related species diverge by many chromosomal rearrangements.
D) distantly related species diverge by only a few chromosomal rearrangements.
E) related species almost always have a different karyotype.