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研究人员绘制北欧驯鹿完整基因结构 - 站长搜索
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研究人员绘制北欧驯鹿完整基因结构

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2020-06-09 08:05:07 转载来源: 科技日报

新知 新华社讯 (记者朱昊晨)芬兰研究人员近日对媒体宣布,他们已绘制出北欧驯鹿的完整基因结构,发现了许多有助于它们适应恶劣自然条件的遗传特征。 芬兰北部的拉普兰地区是北欧驯鹿的主要栖息地

新知

新华社讯 (记者朱昊晨)芬兰研究人员近日对媒体宣布,他们已绘制北欧驯鹿完整基因结构,发现了许多有助于它们适应恶劣自然条件的遗传特征。

芬兰北部的拉普兰地区是北欧驯鹿的主要栖息地。在广泛流行的传说中,来自拉普兰的圣诞老人会在圣诞节期间驾着北欧驯鹿拉的雪橇出行。

参与该研究的芬兰自然资源研究所教授尤哈·坎塔宁对媒体表示,研究发现,当今半驯化的北欧驯鹿是从山鹿驯服而来的。北欧驯鹿的视网膜已经适应了拉普兰地区的光照条件。由于纬度较高,当地冬季存在极夜现象,几乎一天24小时都是黑夜,而夏季则存在极昼现象,日照时间极长。

此外,北欧驯鹿还具有促进产生灵敏嗅觉的基因。坎塔宁解释说,它们必须能够闻到常被覆盖在厚厚积雪下的地衣,因为那是它们的食物。在芬兰,人们很少亲自喂养他们的驯鹿,驯鹿通常成群结队地迁徙并自己寻找食物。

坎塔宁说,北欧驯鹿还有一种帮助其鹿角每年更新的基因,这些基因能够触发鹿角的脱落并使它们再次生长。

标签: 研究人员 绘制 北欧 驯鹿 完整 基因 结构


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