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TLS Online TPP Program

#Question id: 3821

Which mechanism contributes to accuracy during DNA replication?

#Unit 3. Fundamental Processes

  1. The mismatch repair system recognizes an incorrect base-pair and corrects the mistake in the non-methylated strand.

  2. Using primers increases accuracy because the first nucleotides in a new nucleic acid chain are more likely to be correct.

  3. All DNA polymerases have a 5′→ 3′ exonuclease activity which can remove incorrect nucleotides during replication.

  4. Base-stacking between nucleotides and the template DNA controls insertion of the correct nucleotide.

More Questions
TLS Online TPP Program

#Question id: 6993

#Unit 5. Developmental Biology

What molecular marker of head identity is found in the apical tip of a Hydra during head regeneration?
TLS Online TPP Program

#Question id: 6994

#Unit 5. Developmental Biology

Puberty is initiated by pulse release of _____________(hormone)
TLS Online TPP Program

#Question id: 6995

#Unit 5. Developmental Biology

The migratory neural crest cells ________.
TLS Online TPP Program

#Question id: 6996

#Unit 5. Developmental Biology

During metamorphosis, a tadpole's tail is reduced in size by the process of ________.
TLS Online TPP Program

#Question id: 6997

#Unit 5. Developmental Biology

Hans Spemann and colleagues developed the concept of the "organizer" in amphibian embryos while studying the ________.
TLS Online TPP Program

#Question id: 6998

#Unit 5. Developmental Biology

Which of the following is an adult organism that has fewer than 1,000 cells?