In a Drosophila oocyte, bicoid mRNA produced by the mother is localized at one end of the egg rather than evenly distributed throughout the egg. This is an example of:
A)translational control of gene expression during development.
B)translational control of development.
C)hierarchical control of gene regulation during development.
D)maternal developmental effect.
E)oocyte polarization.

Question

Quizplus · Accepted Answer

The localization of bicoid mRNA at one end of the Drosophila oocyte is an example of oocyte polarization, which is important for establishing the anterior-posterior axis during early development. This is not an example of transcriptional or translational control of gene expression, but rather a physical phenomenon involving the asymmetric distribution of maternal molecules within the egg.

In a Drosophila Oocyte, Bicoid MRNA Produced by the Mother