To make copies of specific DNA sequences in the lab, scientists use polymerase chain reaction (PCR). During PCR, heat is used to “unzip” the two strands that comprise the DNA molecule. 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 during DNA replication in the cell? 

Which of the following processes generates new genetic variation in a population?

A mutation in a single gene in mice leads to a wide range of effects, including changes in fur color, bone structure, and immune function. This phenomenon, where one gene influences multiple traits, is known as:

Each messenger RNA (mRNA) codon corresponds to…

We reviewed multiple definitions of life, including one from the textbook. All of these definitions identified a common set of basic characteristics that must be met for something to be considered alive. Which of the following characteristics is not included in the basic definition of life?

Interactions in gene networks describe…

Genetic engineers use Cas9 and restriction enzymes to cut DNA in specific locations. Cas9 and restriction enzymes are naturally found in ________ which use them to fight off viral infections.

When one DNA molecule is replicated, the resulting two DNA molecules contain . This outcome is the result of DNA replication being .

Gaucher Disease is caused by an autosomal recessive allele. A woman has a child with Gaucher Disease, but she is uncertain who the father is. One of the possible fathers has Gaucher Disease. The other possible father does not have the disease. Based on this information, the woman cannot identify which of these two men is her child’s father with 100% certainty. True or false?

Each messenger RNA (mRNA) codon corresponds to…