In glycolysis, the six-carbon molecule is split into G3P and DAP, then DAP is also converted into G3P in step no. _.

Explanation

In glycolysis, during step 4, the six-carbon molecule fructose 1,6-bisphosphate is split into two three-carbon molecules: glyceraldehyde-3-phosphate (G-3-P) and dihydroxyacetone phosphate (DAP). Step 5 involves the conversion of DAP into another G-3-P molecule, ensuring both products of the split can continue through glycolysis. Options 2 & 3 and 3 & 4 are incorrect because they describe steps before or during the splitting process but do not include the conversion of DAP. Options 5 & 6 are incorrect because step 6 is where G-3-P is oxidized, unrelated to the splitting and conversion process.