Biology · Developmental Biology

Which one of the following statements regarding amphibian development is correct?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1The Nieuwkoop centre is formed on the dorsal side of the embryo due to accumulation of β-catenin which helps activate the siamois and twin genes.✓
2The ectodermal cells form neural tissues in the presence of BMP molecules.
3Brain formation requires the activation of both Wnt and BMP pathways.
4There is a gradient of Nodal-related protein across the endoderm with low concentration on the dorsal side of the embryo.

Correct answer

The Nieuwkoop centre is formed on the dorsal side of the embryo due to accumulation of β-catenin which helps activate the siamois and twin genes.

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