Answer:
1. Such a substitution could: change a codon to one that encodes a different amino acid and cause a small change in the protein produced. For example, sickle cell anemia is caused by a substitution in the beta-hemoglobin gene, which alters a single amino acid in the protein produced.
2. A - Mutations are sometimes helpful, sometimes harmful, and sometimes neutral
Step-by-step explanation:
Commutative law: a+b=b+a thats it...
So 9+7 can also be written as 7+9=16
Step-by-step explanation:
We need to find the value of the function at the indicated value.

Indicated values are : f(-7), f(0), f(6), f(7)
To find f(-7), put x = -7 in the given function

To find f(0), put x = 0 in the given function

To find f(6), put x = 6 in the given function

To find f(7), put x = 7 in the given function

Hence, this is the required solution.
Step-by-step explanation: