In order for DNA molecules to undergo recombination, ____.
A) they must be from the same species
B) their strands must separate as in replication
C) they must be cut and spliced at specific nucleotide sequences
D) one of the two DNA strands must be degraded
E) they must first be transcribed

Question

In order for DNA molecules to undergo recombination, ____.
A) ​they must be from the same species
B) ​their strands must separate as in replication
C) ​they must be cut and spliced at specific nucleotide sequences
D) ​one of the two DNA strands must be degraded
E) ​they must first be transcribed

Quizplus · Accepted Answer

Recombination involves the exchange of genetic material between two DNA molecules. This exchange occurs through the physical breakage and rejoining of DNA strands at specific nucleotide sequences known as recombination sites. Therefore, option C is the correct answer choice.

Option A is incorrect because recombination can occur between DNA molecules from different but closely related species (e.g. through horizontal gene transfer).

Option B is incorrect because recombination does not require the separation of DNA strands as in replication. Instead, the DNA strands of the two molecules hybridize together to form recombinant molecules.

Option D is incorrect because recombination does not involve the degradation of DNA strands.

Option E is incorrect because transcription is the process of synthesizing RNA from a DNA template and is not directly involved in DNA recombination.

In Order for DNA Molecules to Undergo Recombination, ____