A zebrafish embryo has as loss-of-function mutation in genes early in the Hoxa and Hoxd series (Hox1-4). What would be the result in the developing craniofacial area?

Question

A zebrafish embryo has as loss-of-function mutation in genes early in the Hoxa and Hoxd series  (Hox1-4). What would be the result in the developing craniofacial area?

Answer

Branchial # 1 (BA1) fails to form, but all others do form

Answer

All branchial arches develop as arch 1 (BA1)

Answer

Branchial arch 1 (BA1) develops as arch 2 (BA2)

Answer

No branchial arches form in the embryo

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A zebrafish embryo has as loss-of-function mutation in genes early in the Hoxa a...

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