Answer :
Final answer:
Piwi and Aubergine are the PIWI proteins that bind in the ping-pong cycle, while Argonaute proteins are involved in other RNA silencing pathways. correct answer is A) Piwi and B) Aubergine.
Explanation:
In the ping-pong cycle, PIWI proteins play a crucial role in the silencing mechanism of transposons and retrotransposons in the germline cells. Two PIWI proteins, Piwi and Aubergine, are involved in this process. They bind to small interfering RNAs (siRNAs) and guide the cleavage of target RNAs, leading to the degradation of transposon RNA.
Argonaute proteins, on the other hand, are not directly involved in the ping-pong cycle. They are part of the RNA-induced silencing complex (RISC) and participate in different RNA silencing pathways, including microRNA-mediated gene regulation.
Therefore, the correct answer is A) Piwi and B) Aubergine.
