गुणसूत्र (chromosome) का वह भाग जो अनुलेखन रूप से निष्क्रिय रहता है और किसी भी प्रोटीन को कोड नहीं करता है, कहलाता है:

In the developing mouse brain, when gene 'yfg' is deleted from hippocampal cell-type 'A', the number of neighbouring cell-type 'B' increases by five-fold. From this information, which statement accurately describes 'yfg' functioning in wildtype 'A' cells?

Which of the following organisms has a lower number of chromosomes than humans (2n = 46)?