2. brittany wanted to find out which wheels were best for her skateboard. she purchased 4 sets of new

wheels of different brands. she and a friend set up a course on her driveway. brittany rode through

the course 5 times on each set of wheels. her friend timed her with a stopwatch and recorded the

times. they averaged the times for each brand of wheels.

a. independent variable

b. dependent variable -

c. experimental group -

d. control group -

e. constants -

image result for describe the various types of gene mutationsghr.nlm.nih.gov

the types of mutations include: missense mutation: this type of mutation is a change in one dna base pair that results in the substitution of one amino acid for another in the protein made by a gene. nonsense mutation: a nonsense mutation is also a change in one dna base pair.

explanation:

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.