With Regard to the Establishment of an Anterior-Posterior Axis, Which

question 64

Multiple Choice

With regard to the establishment of an anterior-posterior axis, which of the following pairs is incorrect?

• A)C. elegans - convergent elongation of P granules
• B)mammal - orientation of egg and sperm nuclei before fusion
• C)insects - morphogen gradients
• D)frog - asymmetry in the animal vegetal hemispheres
• E)chick - gravity as the egg travels down the oviduct

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