In Mrs. Morales' class, the ratio of boys to girls is 3:7. If there are 30 students in her class, how many of of them are girls?

Actually 21 of them are girls.

Step-by-step explanation:

Make a table with 3 and 7 like this

3|7

6|14

9|21

* remember to add together each side every time you multiply to make sure you get 30

no one knows lol

step-by-step explanation:

homozygous. one is homozygous, while two is heterozygous.