The anterior-posterior orientation of Drosophila embryos is initially controlled and determined by ____.

Name: The anterior-posterior orientation of Drosophila embryos is initially controlled and determined by ____.
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Maternal-effect genes are responsible for establishing the anterior-posterior orientation in Drosophila embryos. These genes are expressed by the mother and their products are deposited in the egg, setting up the initial gradients that determine the embryo's body plan.

The Anterior-Posterior Orientation of Drosophila Embryos Is Initially Controlled and Determined