What does the clock and wavefront model propose? Select one: a) Cells must be passed by the wavefro…

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What does the clock and wavefront model propose? Select one: a) Cells must be passed by the wavefront to commit to forming a somite b) Cells must undergo a specific number of oscillations of gene activity in order to form a somite c) Genes that position a wavefront have clock-like gene expression d) Cells must not have yet been passed by the wavefront to commit to forming a somite

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