When Genes Are Transcribed in the Same Direction,with Expression Proceeding

Multiple Choice

When genes are transcribed in the same direction,with expression proceeding from one end of a cluster to the other end,both spatially (anterior to posterior in the embryo) and temporally (early to late in development) it is known as

A) bilinearity.
B) colinearity.
C) homologous transcription.
D) heterolinearity.
E) homolinearity.