请教blast的一个问题

这是我的引物在ncbi上blast的部分结果，我看不懂。是不是说我的引物和以下的都是同源的？这些都不是同一个基因？也就是说我的这个引物不能用了？:(
为什么会有这么多的同源片段那？我想找到全长的基因，这个引物是前面的和后面的一段，我想我都的要，怎么办那？
1，Homo sapiens protein translocase, JM26 protein, UDP-galactose
translocator, pim-2 protooncogene homolog pim-2h, and
shal-type potassium channel genes, complete cds; JM12
protein and transcription factor IGHM enhancer 3 genes,
partial cds; and unknown gene, complete sequence
2，Homo sapiens BAC clone RP11-268N9 from 2, complete sequence
3，Homo sapiens chromosome 2 clone RP11-268N9, complete sequence
4，Homo sapiens PAC clone RP4-733B9 from 7p14-p13, complete sequence
5，Homo sapiens BAC clone RP11-416E16 from 4, complete sequence
Length = 169063
6，Homo sapiens mRNA; cDNA DKFZp667M159 (from clone DKFZp667M159
7，Homo sapiens chromosome 3 clone RP11-456N14, complete sequence
8，Homo sapiens BAC clone GS1-250N6 from 7, complete sequence
9，Homo sapiens chromosome 3 clone RP11-80H18, complete sequence
10，Homo sapiens clone RP11-533E23, complete sequence
11，Human DNA sequence from clone RP11-179F17 on chromosome 13, complete
sequence
12，Homo sapiens BAC clone RP11-102O5 from Y, complete sequence
13，Human DNA sequence from clone RP4-559A3 on chromosome 1q41-42.2,
complete sequence
14，Homo sapiens genomic DNA, chromosome 22q11.2, clone KB1125A3
Length = 162328