A)They use different template strands for transcription.
B)They are expressed at different times in development.
C)They evolved from different ancestral genes.
D)They are dispersed on different chromosomes.
E)Some are expressed in all cells; others are expressed only in red blood cell precursors.

A)protein cleavage
B)exon shuffling
C)mutation in a pseudogene
D)duplication and divergence
E)de novo mutation

A)protein cleavage
B)transcription regulation
C)gene duplication
D)chromosomal inversion
E)mutation that creates a new ATG