Question

question 10
1 pts
eukaryotic dna replication begins at:
centrioles
a purine base
the 5 end of a dna parent strand
telomeres
multiple origins of replication

Explanation:

To solve this, we analyze each option:

• Centrioles: Involved in cell division (spindle formation), not DNA replication start.
• A purine base: DNA has purines (A, G), but replication doesn’t start at a single purine.
• The 5’ end of a DNA parent strand: DNA replication (synthesis) occurs in the 5’→3’ direction, but initiation isn’t at the 5’ end of the parent strand.
• Telomeres: Ends of chromosomes; replication at telomeres is specialized (telomerase), not the start of general replication.
• Multiple origins of replication: Eukaryotic chromosomes are large, so replication begins at many origins (origins of replication) across the chromosome.

Answer:

E. multiple origins of replication