Scientists want to test if a mouse species has a particular allele for a gene. They create many copies of a fluorescent probe to inject into the mice. What DNA sequence will fluoresce after probe injection

When should a bar graph be used? a. when there is no independent variable. b. when the independent variable is continuous and does not show a relationship to the dependent variable. c. when the independent variable is continuous and shows a causal link to the dependent variable. d. when the independent variable is composed of categories and does not show a relationship.

The image shows embryos of three vertebrate classes

What would happen to the nutrients in an ecosystem if decomposers, such as bacteria, didn’t exist there?