Which of the following places the steps of the gram stain in the correct order? 1-alcohol-acetone 2-crystal violet 3-safranin 4-iodine

Gram staining is arranged in the following order;

1) Crystal violet

2) iodine

3) Alcohol-acetone

4) safranin

Explanation:

Applying primary stain to a heat fixed smear of a bacterial culture

Then you add iodine which binds the crystal violet and traps it in the cell. After you decolourise with ethanol finally counter shade with safranin

a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.