用conserved sequence造句子，“conserved sequence”造句

Escherichia coli promoter, which could initiate transcription of a gene, was mainly consisted of two conserved sequences, -10 box and -35 box, and spacer between them, whose length is changeable.

On our conjecture, Gene 3a, a highly conserved sequence, may be the determinant of the virulence of FMDV. Changes in 3a have been associated with altered host range.