What name is given to the first organisms to colonize any newly available area

As a small change in a person's dna can cause a genetic disorder

The process of replication is the same for all living things because

Need asap plz hurry im being timed when a body cell divides through the process of mitosis, the chromosomes in the daughter cells a. represent only the healthiest chromosomes from the parent cell. b. represent only half of the chromosomes in the parent cell. c. are identical to the chromosomes of the parent cell. d. are formed when chromosomes from the parent cell cross over.