Below is a DNA molecule, with the ends labeled A, B, C and D…

Below is a DNA molecule, with the ends labeled A, B, C and D.  Which ends would get shorter during DNA replication if telomerase did not function? A  5’———————————————–3’  B C  3’———————————————–5’  D

Two circular DNA molecules are topoisomers of each other; th…

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?