A mutation that knocked out the proofreading function of DNA polymerase would result in . See Section 15.5 (Page 330) . a. a higher-than-normal rate of DNA synthesis errors b. a lower-than-normal rate of DNA synthesis errors c. complete failure of DNA replication d. no discernible effect on DNA synthesis

a. a higher-than-normal rate of DNA synthesis errors

Explanation:

A mutation that knocked out the proofreading ability of DNA polymerase would result in a higher than normal rate of DNA synthesis errors.

The synthesis of DNA or DNA replication usually comes with error which are fixed by the polymerase enzyme. The enzyme proofreads the base sequence and ensures that the correct nucleotide bases which are complementary to the parent strand are added to the new, elongating strand each time.

If a mutation occur to the DNA polymerase enzyme and it losts the ability to proofread and fix errors, it means a higher-than-normal error rate will occur at the end of replication.

It is just like authors publishing their works directly without the input of editors.

The correct option is a.

the two answers are a, the population of birds with large beaks will increase on the island, and c, the trait for large beaks will be passed on to future generations through natural selection. the reason for that is because if the birds that have beaks developed for eating small seeds lose all of their food, they will go hungry and eventually starve because they physically cannot eat the large seeds, therefore making the population of large beaked birds higher. also, if the trait of large beaks are dominant on the island over small beaks, then over time the large beaked birds will reproduce more and more, while the smaller beaked birds will reproduce less and less because they can't survive with the food provided. that leads to the trait of small beaks disappearing and the trait of large beaks taking over the island.