In certain species of butterflies, wing patterns are influen…
In certain species of butterflies, wing patterns are influenced by both genetic factors and the temperature experienced during development. A specific gene sets the basic design of the pattern, but the ambient temperature can modify the contrast and detail of the markings. What term best describes the wing pattern in these butterflies?
Read DetailsHunter Syndrome is a rare genetic disorder that is inherited…
Hunter Syndrome is a rare genetic disorder that is inherited as a recessive X-linked trait. The healthy allele is H, and the allele for Hunter Syndrome is h. A husband and wife have 2 sons and 2 daughters. One son and one daughter have Hunter Syndrome. What are the genotypes of the parents?
Read DetailsDuring DNA replication, our cells use the enzyme helicase to…
During DNA replication, our cells use the enzyme helicase to “unzip” the two strands that comprise the DNA molecule. To make copies of specific DNA sequences in the lab, scientists use polymerase chain reaction (PCR). PCR mimics DNA replication in some ways but not in how the two strands are pulled apart. How are the two strands of DNA unzipped in the lab during PCR?
Read Details