Genetic mutations can be a problem because of the effects of the mutated protein on an individual.

organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

1. b.

2. d.

3. a.

5. d.

6. c.

these are the only ones that i know, i hope this , and good luck.

the correct answer in apex is tissue development, i know because i just had this question