The blastopore denotes the presence of an endoderm-lined cavity in the developing embryo, a cavity that is known as the

TLS Online TPP Program

#Question id: 3652

#Unit 3. Fundamental Processes

Alkylating agents are electrophilic chemicals which readily add alkyl groups to various positions on nucleic acids. A common example is:

TLS Online TPP Program

#Question id: 3653

#Unit 3. Fundamental Processes

Cyclobutane pyrimidine dimers are formed by -------------from adjacent pyrimidines on one strand by cyclization of the double-bonded C5 and C6carbon atoms of each base to give a cyclobutane ring.

TLS Online TPP Program

#Question id: 3654

#Unit 3. Fundamental Processes

Cleavage of the cyclobutane ring of pyrimidine dimers by ______________ restores the original DNA structure.

TLS Online TPP Program

#Question id: 3655

#Unit 3. Fundamental Processes

The mismatched base is removed from the daughter strand of DNA by:

TLS Online TPP Program

#Question id: 3656

#Unit 3. Fundamental Processes

In nucleotide excision repair, an endonuclease makes nicks on either side of the lesion.

TLS Online TPP Program

#Question id: 3657

#Unit 3. Fundamental Processes

Mutations in excision repair genes or a translesion DNA polymerase cause: