Which of the following is an illustration of instructive interaction? An inducing signal from the optic vesicle is necessary for new gene expression in the lens ectoderm. The epidermis signals the underlying dermis to create condensations and the dermal condensations then signal the epidermis to form specific cutaneous structures. Wing epidermal epithelium produces wing feather when exposed to wing dermal mesenchyme, but will produce scales and claw when exposed to foot dermal mesenchyme. When implanted in the newt embryo, the frog oral ectoderm can only differentiate into frog derivatives and will not differentiate into newt derivatives. Contact with the appropriate extracellular matrix is sufficient for cel
Which of the following is an illustration of instructive interaction?
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An inducing signal from the optic vesicle is necessary for new gene expression in the lens ectoderm.
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The epidermis signals the underlying dermis to create condensations and the dermal condensations then signal the epidermis to form specific cutaneous structures.
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Wing epidermal epithelium produces wing feather when exposed to wing dermal mesenchyme, but will produce scales and claw when exposed to foot dermal mesenchyme.
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When implanted in the newt embryo, the frog oral ectoderm can only differentiate into frog derivatives and will not differentiate into newt derivatives.
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Contact with the appropriate extracellular matrix is sufficient for cel
Instructive interaction is a type of inductive response, caused by a inducing cell, which can be a protein or other signal molecules, which instructs another receptor cell to develop in a particular way. A developing cell in the embryonic phase can achieve a cell fate or the gene expression can be altered in presence of the instructive inducer cell or signal. Without the signal from the inducer, the responding cell can not develop in the certain fate, or express its genes in that particular direction.
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