In Drosophila development, what sequence is followed in the hierarchy of expression of the gene types listed below?
1. Homeotic genes
2. Maternal effect genes
3. Gap genes
4. Pair rule genes
5. Segment polarity genes
1
1, 2, 3, 4, 5
2
2, 3, 4, 5, 1
3
2, 3, 4, 1, 5
4
1, 2, 4, 3, 5