题目

某种昆虫的性染色体组成为XY型（n=16），其两对相对性状中翅型（长翅、残翅）由A、a基因控制，眼色（红眼、褐眼）由B、b基因控制。回答下列问题：（1）若要测定该昆虫的基因组序列，则需测定____________条染色体上的DNA序列。（2）已知让长翅红眼个体与残翅褐眼个体杂交子代全为长翅红眼。现选择长翅褐眼雌性与残翅红眼雄性进行多次单对杂交，F1的性状表现如下表所示：F1长翅红眼残翅红眼长翅褐眼残翅褐眼雌性271268272274雄性270271270269 ①由杂交1、根据句意，在句子空白处填入适当的词，使句子完整。(每空限填一词) 1．“        we come early?”  “No．you needn’t.” 2．If people eat a lot of fruit or vegetables often，they’ll be          ． 3．Mr. Mo likes reading books．He doesn’t like          TV． 4．       fine weather it is today! Let’s go hiking． 5．His brother got one million dollars，so he was rich         ．