**Title: Distribution of Maternal Effects mRNA and Proteins in Drosophila****Description**: In Drosophila development, maternal effects genes produce mRNA and proteins crucial for embryo patterning. These molecules are distributed in specific gradients, influencing the anterior-posterior axis formation before cellular migration. **Images and Descriptions:**- **Image A**: An oval gradient illustration transitioning from dark blue in the anterior to white in the posterior region. This represents a high concentration of a molecule at the anterior end, decreasing towards the posterior. - **Image B**: An oval gradient transitioning from dark blue in the posterior to white in the anterior region. It shows a high concentration of a molecule at the posterior end, fading towards the anterior. - **Image C**: A uniformly dark blue oval illustrating an even distribution of a molecule throughout the embryo.**Matching Exercise**:- **bicoid mRNA**: Matched with Image A, indicating a high concentration at the anterior.- **Bicoid protein**: Matched with Image A, similar distribution as bicoid mRNA.- **nanos mRNA**: Matched with Image B, indicating concentration at the posterior.- **Nanos protein**: Matched with Image B, similar distribution as nanos mRNA.- **hunchback mRNA**: Matched with Image A.- **Hunchback protein**: Matched with Image A.This exercise demonstrates the spatial distribution of key developmental molecules, essential for understanding embryonic patterning in Drosophila.

Maternal effect genes are genes that are expressed in the mother and produce mRNAs and proteins that are deposited in the egg. These maternal products play a crucial role in early embryonic development, before the zygotic genome is activated. In Drosophila, maternal effect genes are essential for establishing the body axes and patterning the embryo. For example, the maternal effect gene bicoid encodes a protein that forms a concentration gradient in the oocyte, with the highest concentration at the anterior pole. This bicoid gradient is essential for patterning the anterior-posterior axis of the embryo.The question shows the distribution of maternal effects mRNA (before migration) and proteins in Drosophila, specifically bicoid and hunchback.A shows the distribution of bicoid mRNA (blue) and protein (red) in the Drosophila oocyte before migration. Bicoid mRNA is localized to the anterior pole of the oocyte, while bicoid protein is distributed throughout the oocyte.B shows the distribution of hunchback mRNA (blue) and protein (red) in the Drosophila oocyte before migration. Hunchback mRNA is localized to the anterior and posterior poles of the oocyte, while hunchback protein is distributed throughout the oocyte.C is incorrect.Therefore, the answer to the question in the image is: A. bicoid mRNABicoid proteinhunchback mRNAHunchback proteinTherefore, the answer to the question in the image is: A. bicoid mRNABicoid proteinhunchback mRNAHunchback protein