What is a chromosome territory?

Two circular DNA molecules are topoisomers of each other; they contain the same amount of DNA. Let’s call them DNA-1 and DNA-2. Under the electron microscope, DNA-1 is more compact compared to DNA-2. The level of gene transcription is lower for DNA-2. Which of the following possibilities would best explain these observations?

Which of the following is the correct order for the hierarchy of compaction leading to a metaphase chromosome?

What is the molecular/cellular explanation for maternal effect?

When two closely related species (like two salamanders) differ greatly in their total amount of DNA, this is usually due to

In the leading strand, DNA is made in the direction _________ the replication fork and is made as __________.

The most commonly occurring sequence among a group of related sequences is

A codon is 5’-GAU-3’.  An anticodon that would recognize this codon would be

When comparing the yeast genome (a simple eukaryote) to the human genome (a complex eukaryote), why is the human genome larger?

What are the expected results for the Meselson and Stahl experiment after 3 generations (i.e, 3 rounds of DNA replication in the presence of light nitrogen)? Note: during generation zero, the DNA is all heavy, and subsequent generations only make light DNA.