Certain human genetic conditions, such as sickle cell anemia, result from single base pair mutations in DNA. Explain how a single base-pair mutant in DNA can alter the structure and, in some cases, the function of a protein.

what's the question?

the answer is cell division : )

1. b.

2. d.

3. a.

5. d.

6. c.

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

not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.