Describe in detail how insertion, deletion, and base substitution of nucleotides can have a significant impact on genes. Find three specific examples (actual gene mutations, not chromosome mutations) of ways in which a very small change in DNA can have a major impact on an organism, and describe each mutation […]

Let’s assume for this problem that the world is divided into blue-eyed people and brown-eyed people. Let’s also assume for the sake of simplicity that there is only one gene responsible for eye color and that the allele for brown eyes (B) is dominant over the allele for blue eyes […]

Case Study In a neighborhood within 3-5 miles of a former garbage dump and plastics and battery recycling plant site that have been shut down for just over a year, 56 children have become unexpectedly ill all exhibiting the same or similar overlapping symptoms. The symptoms include moderate to severe […]

1. Why does DNA replicate from 5′ to 3′ end, instead of from 3′ to 5′ end? 2. Why do we need DNA polymerase I and not just DNA polymerase III, if polymerase I is just initiating DNA replication and polymerase III does all the “heavy lifting” and continues it, […]