Lactose operon genes are examples of: a) housekeeping genes
b) genes that are transcribed at a constant rate
c) genes with a GC-rich promoter
d) none of the above

Ahypothesis that has been tested again and again , with similar results each time may become a law , true or false

Plz plz plz quick! 49 points for whoever which of the following statements about greenhouse effect is true? *life on earth is suffering because of greenhouse effect *the greenhouse effect is caused by human activity *all greenhouse gases are harmful *life on earth would not exist without the greenhouse effect

Which would prevent a plant from growing