80.人類細胞的細胞核內,在穿透式電子顯微鏡(transmission electron microscopy)影像上顯示出兩種不同的染色模式,包括真染色質(euchromatin)與異染色質(heterochromatin)。下列那一種染色模式代表真 染色質? (A)深染色和濃縮的染色質區域(dark-staining and condensed regions of chromatin) (B)深染色和較少濃縮的染色質區域(dark-staining and less-condensed regions of chromatin) (C)淡染色和濃縮的染色質區域(light-staining and condensed regions of chromatin) (D)淡染色和較少濃縮的染色質區域(light-staining and less-condensed regions of chromatin)