Multiple choice

Genes whose products are constantly needed for the maintenance of the cells are called

  1. inducible genes

  2. constitutive genes

  3. facultative genes

  4. housekeeping genes

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A housekeeping gene is typically a constitutive gene that is transcribed at a relatively constant level. The housekeeping gene's products are typically needed for maintenance of the cell. It is generally assumed that their expression is unaffected by experimental conditions. Examples include actin, GAPDH and ubiquitin.