Scientists using RNA in situ hybridization techniques observed that a transcription factor called macho-1 localized to some cells during early cleavage,but not others.Descendents of these cells expressing macho-1 produce mesodermal tissues.If you prevented the expression of macho-1 in an embryo during cleavage,which structures might you expect to be absent in later development?
A)neural tube
B)somites
C)digestive system
D)skin

Question

Quizplus · Accepted Answer

Macho-1 is responsible for the formation of mesodermal tissue, which includes somites. Thus, if macho-1 is prevented from being expressed during cleavage, somites may be absent in later development. The neural tube, digestive system, and skin are derived from other germ layers and are not directly affected by macho-1 expression.

Scientists Using RNA in Situ Hybridization Techniques Observed That a Transcription