What can be said about Drosophila development?
A)Paternal genes determine the initial course of development after fertilization.
B)Zygotic genes determine the initial course of development after fertilization.
C)Maternal genes determine the initial course of development after fertilization.
D)Syncytial blastoderm genes determine the initial course of development after fertilization.

Question

Quizplus · Accepted Answer

Drosophila development is largely dependent on maternal genes, particularly during the early stages of embryogenesis. Maternal RNAs and proteins are deposited in the developing egg during oogenesis, and these play important roles in determining the initial course of development after fertilization. Paternal genes do not play a significant role in determining early development in Drosophila, and zygotic genes are not activated until several mitotic divisions have occurred. The syncytial blastoderm stage refers to a phase of development when the Drosophila embryo is a syncytium, or multinucleate cell, and gene expression is not yet regulated at the level of individual nuclei. While syncytial blastoderm genes may influence later stages of Drosophila development, they are not responsible for determining the initial course of development after fertilization.

What Can Be Said About Drosophila Development