• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Discover >Platypus Genome Is A Mash-up
【24h】

Platypus Genome Is A Mash-up

机译：鸭嘴兽基因组是一个混搭

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The platypus has always been considered odd. Not only does it have webbed feet, a tail like a beaver's, a coat of fur, and a large bill, but it also lays eggs and nurses its offspring through a set of glands on its abdomen. Biologists classify the platypus as a monotreme, an egg-laying mammal with a single opening for reproduction and excretion. But is it truly a mammal? A draft of the genetic sequence of Glennie, a female platypus in Australia, answers the question. "We found that the platypus has reptilian, avian, and mammalian genome features in one organism," says Mark Batzer, a biologist at Louisiana State University. "It looks like a car that was built on a Friday. They used the parts they had left to put it together." This mix of genes, he says, supports the classification of the platypus as a unique and very early mammal. Among its oddities: 52 chromosomes, including 10 sex chromosomes, as well as the highest number of repeated segments in the genome of any mammal sequenced so far.
机译：鸭嘴兽一直被认为是奇怪的。它不仅有蹼状的脚，像海狸一样的尾巴，大衣，还有大帐单，而且还产卵并通过腹部的腺体照顾后代。生物学家将鸭嘴兽归类为一种极端动物，一种产卵的哺乳动物，有一个开口供繁殖和排泄。但这真的是哺乳动物吗？澳大利亚雌性鸭嘴兽格伦妮（Glennie）的遗传序列草案回答了这个问题。路易斯安那州立大学的生物学家马克·巴策尔说：“我们发现鸭嘴兽在一种生物中具有爬行类，鸟类和哺乳动物的基因组特征。” “它看起来像是星期五制造的汽车。他们用剩下的零件将它们组装在一起。”他说，这种基因混合支持鸭嘴兽被分类为一种独特的非常早期的哺乳动物。奇怪的是：52条染色体，包括10条性染色体，是迄今为止测序的任何哺乳动物基因组中重复片段数量最多的。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号