Every step of DNA replication needs special molecules to do the work. These molecules are called enzymes. As we go through this, remember, all that is happening is the DNA is being unzipped and each side of the zipper is being copied.
Markup as a Percentage of Cost or Selling Price. Markup can be expressed as a percentage of cost or of selling price. Consider an item that costs the seller $50 and retails for $100.This is a 100-percent markup over cost, but in terms of the selling price it is only a 50-percent markup. Retailers typically express markup as a percentage of selling price.arkup as a Percentage of Cost or Selling Price. Markup can be expressed as a percentage of cost or of selling price. Consider an item that costs the seller $50 and retails for $100.
Then the buyer calculates the price that the garment will need to be sold for in order to reach the retailer's mark-up price. The markup price is the difference between the selling price and the manufacturer's cost price. The retail selling price is typically 2.5 or 3 times the price of the manufacturer's cost price. While it may seem like a retailer is making a large profit from this markup, the proceeds are used to cover many costs such as the buyer's salary, store rent, utility bills, and office costs.