Which of the following mutations would be most likely to impair production of a normally functioning protein?
a. insertion of three bases in a row
b. deletion of a single base
c. a point mutation within an intron
d. a mutation that changes a c to a g

B

Explanation:

The deletion of a single base is the mutation that would most likely impair the production of a protein, because each aminoacid is coded by a triplet of three base pairs. So when one of the bases is deleted, the whole series of triplets is altered so the whole series of aminoacids in the protein would now be different.

the overall balanced equation

6co2 + 6h2o > c6h12o6 + 6o2

sunlight energy

where: co2 = carbon dioxide

h2o = water

light energy is required

c6h12o6 = glucose

o2 = oxygen

the answer is d. chordata