这种问题几乎很多人问过我。无聊的我在读书时,突然发现课本出现了一个答案。
还记得,仔仔的哥哥弟弟都比较大只,而仔仔适当中比较小。当初我们全家人都以为他不健康所以长不大,所以买了很多维他命,狗狗的补品,等等。还在他的每一餐食物加了牛肉,零食,和小饼干,想尽办法让他增肥。
根据课本的说法:
Zai zai's parent carry one dominant allele for Tall (D) and one recessive allele for Dwarf (d). Due to allele D is dominant allele which can come over the recessive allele (d), therefore, zai zai's both parent are tall in their size. When the gamates from both parents are formed, 2 types of allele can be found separately; one is D allele and another one is d allele. When 2 gamates from both parent are fused together to form a zygote. There are 2 probability of phenotypes are formed: Tall and Drawf. Drawf size will only be formed when 2 recessive alleles are combined (dd). Therefore, zai zai is carrying 2 reccessive alleles.
我想仔仔那么小只是因为他身上的基因。无论他是怎样,我们全家人一样会把它当宝贝宠爱.
在照片里,仔仔是最年长,但是最矮小。所以,他还找不到女朋友。希望他来日找到真爱。爱你,仔仔!!!
是很可愛的貴賓狗哦~
ReplyDelete哪一隻是仔仔啊?看起來好像都差不多大啊~
仔仔是中间那只。他比同岁的小狗小一粒头。
ReplyDelete你也养了一只西施,对吗?
超可爱。。。以后可以做朋友哦!!!