7. Match each molecule below with its function in Drosophila embryo patterning.

Question

7. Match each molecule below with its function in Drosophila embryo patterning. (6 marks)

d. Transcription factor, activated by Dorsal

1. Hedgehog a. Ligand, binds to Toll 2. Kruppel b. Transcription factor, represses Wingless 3. Engrailed c. Homeotic selector gene 4. Nanos

d. Transcription factor, activated by Dorsal

5. Fushi tarazu e. Secreted protein, binds to Patched 6. Hunchback f. Transcription factor, activates Hedgehog 7. Abdominal B g. Secondary gap gene, repressor 8. Trunk h. Transcription factor, activates Wingless 9. Twist i. Maternal and zygotic gene, gap gene 10. Tolloid j. Maternal gene, egg polarity gene 11. Spatzle k. Secreted protein, repressed by Dorsal 12. Cubis interruptus l. Ligand, binds to Torso

Explanation / Answer

1. Hedgehog- Ligand, binds to Torso

2. Kruppel- Matrenal and zygotic gene, gap gene

3. Engrailed- Transcription factor, activates Hedgehog gene

4. Nanos- Maternal gene, egg polarity gene

5. Fushi tarazu- Homeotic selector gene.

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