A team of researchers is investigating the process of DNA replication and focusing on the synthesis of the leading strand. They observe that the replication fork is moving smoothly along the template strand. Which enzyme is primarily responsible for synthesizing the leading strand?

In a laboratory study, scientists discover a genetic mutation that affects the gene coding for primase. What specific impact is likely to result from this mutation during DNA replication?

In humans, which chromosome carries genes that are commonly associated with sex-linked traits?

A geneticist is studying a gene associated with eye color in fruit flies. They identify a mutation in the gene that changes the third nucleotide of a codon from G to A. However, this mutation does not alter the amino acid sequence of the protein. What type of mutation is this considered?

A researcher is studying a new drug that specifically inhibits the activity of DNA ligase. Which step of DNA replication will be directly affected by this drug?

During a forensic investigation, DNA analysis reveals that a suspect’s DNA contains 25% cytosine (C). What percentage of the DNA sample would be expected to consist of thymine (T)?

Which type of diffusion occurs when molecules move across a membrane with the assistance of transport proteins?

In a molecular biology lab, researchers are studying the transcription of a specific gene. They observe that RNA polymerase is binding to the promoter region of the gene and initiating synthesis of an RNA molecule. Which of the following accurately describes the next step in the process of transcription?

Enzymes are biological catalysts that speed up chemical reactions by:

A geneticist is studying the transcription of a gene in a eukaryotic cell. They notice that the pre-mRNA transcript undergoes processing before becoming mature mRNA. What is a key step in eukaryotic transcription that involves processing of the pre-mRNA transcript?