ANIMAL REPRODUCTION AND DEVELOPMENT
EMBRYONIC DEVELOPMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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These little proteins determine the axes of an organism
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morphogens
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mutagens
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hex genes
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none of these
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Explanation:
Detailed explanation-1: -More commonly, morphogens comprise secreted proteins that form an extracellular gradient across a field of cells.
Detailed explanation-2: -A key finding is that many inductive signals act as morphogens: locally produced, secreted signaling molecules that act over long distances and control growth and patterning throughout a region of tissue.
Detailed explanation-3: -Morphogens are secreted growth factors that direct cell fate decisions during embryonic development. Components of many morphogen signaling cascades continue to be expressed in the postnatal brain, indicating that they may govern additional developmental processes after the completion of cell fate specification.
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