Here Penny McCarthy is talking about her memories of his father working with other famous scientists on DNA studies decades ago:
My father worked alongside Watson and Crick in the 1960s. He has stories about the discovery of the double helix, stories about scientists who plunder other scientists’ research, stories about Crick and his flirtation with my mother, stories about parties and ladies jumping out of cakes for Crick’s birthday, stories about Watson always tripping over his shoelaces. Throughout the 1960s and 1970s my father worked on DNA so as a child my life sort of fitted in around this obsession. In our house his clones lived in the fridge and in searching for the butter you always ran the risk of knocking them over. For me the letters D, N, A are the fragments of an overheard conversation, incompletely understood.
Does when she says "For me the letters D, N, A are the fragments of an overheard conversation, incompletely understood." imply that:
She unintentionally listened to the conversations between her father and his colleagues on DNA related subjects without completely understanding what they were actually talking about. And whenever she hears the word DNA the first thing she remembers is those conversations?
Is it a metaphor for the fact that subjects related to DNA are nonsense for her today?