Question

How can scientists use knockout mice to analyze developmental events after birth?

1) by inserting the Cre gene into the genome of mice after they are born
2) by fusing the Cre gene to a promoter than can be turned on by a chemical supplied in the mice's food or water
3) by fusing the Cre gene to a promoter that is kept inactive during embryonic developmental by a chemical supplied in the mother's food or drink

Answer 1

Scientists can use knockout mice to analyze developmental events after birth through various methods, including using the Cre gene and reverse genetics.

Step-by-step explanation:

Scientists can use knockout mice to analyze developmental events after birth by inserting the Cre gene into the genome of mice after they are born, or by fusing the Cre gene to a promoter that can be turned on by a chemical supplied in the mice's food or water. Additionally, scientists can use reverse genetics to determine the function of specific genes by attaching known genes (called reporter genes) that encode easily observable characteristics to genes of interest.