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科学家绘制鸡基因调控的详细图谱

2025-04-15 16:45 by 珀涅罗珀记

鸡是人类驯化最早的家禽之一,其驯化历史悠久,一般认为,现代家鸡起源于原鸡,原鸡主要分布在亚洲南部和东南部的热带、亚热带地区,包括红原鸡、灰原鸡、绿原鸡和锡兰原鸡等种类,其中红原鸡被公认为是家鸡的主要祖先。有关禽类的驯化时间目前尚无定论,多数学者认为大约在公元前 8000 年至公元前 5000 年。有研究表明,中国、印度和东南亚等地都是鸡驯化的重要中心。例如,中国的一些新石器时代遗址,如河北武安磁山、河南新郑裴李岗等,都发现了鸡骨化石,表明当时鸡已被驯化。在印度,公元前 2000 年左右的文献中也有关于鸡的记载。现在由加州大学戴维斯分校动物科学系 Huaijun Zhou 教授领导的一个国际研究小组首次绘制了鸡基因调控的详细图谱,这一突破可以帮助科学家培育出对禽流感等疾病更有抵抗力的鸡类。

Nature Genetics:Genetic regulation of gene expression across multiple tissues in chickens

ebiotrade 中国科学家助力破解世界各地100多种鸡品种的基因组

#生物技术



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科学家绘制鸡基因调控的详细图谱

2025-04-15 16:45 by 珀涅罗珀记

鸡是人类驯化最早的家禽之一,其驯化历史悠久,一般认为,现代家鸡起源于原鸡,原鸡主要分布在亚洲南部和东南部的热带、亚热带地区,包括红原鸡、灰原鸡、绿原鸡和锡兰原鸡等种类,其中红原鸡被公认为是家鸡的主要祖先。有关禽类的驯化时间目前尚无定论,多数学者认为大约在公元前 8000 年至公元前 5000 年。有研究表明,中国、印度和东南亚等地都是鸡驯化的重要中心。例如,中国的一些新石器时代遗址,如河北武安磁山、河南新郑裴李岗等,都发现了鸡骨化石,表明当时鸡已被驯化。在印度,公元前 2000 年左右的文献中也有关于鸡的记载。现在由加州大学戴维斯分校动物科学系 Huaijun Zhou 教授领导的一个国际研究小组首次绘制了鸡基因调控的详细图谱,这一突破可以帮助科学家培育出对禽流感等疾病更有抵抗力的鸡类。

Nature Genetics:Genetic regulation of gene expression across multiple tissues in chickens

ebiotrade 中国科学家助力破解世界各地100多种鸡品种的基因组

#生物技术

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Export WhatsApp stickers to Telegram on Android

From the Files app, scroll down to Internal storage, and tap on WhatsApp. Once you’re there, go to Media and then WhatsApp Stickers. Don’t be surprised if you find a large number of files in that folder—it holds your personal collection of stickers and every one you’ve ever received. Even the bad ones.Tap the three dots in the top right corner of your screen to Select all. If you want to trim the fat and grab only the best of the best, this is the perfect time to do so: choose the ones you want to export by long-pressing one file to activate selection mode, and then tapping on the rest. Once you’re done, hit the Share button (that “less than”-like symbol at the top of your screen). If you have a big collection—more than 500 stickers, for example—it’s possible that nothing will happen when you tap the Share button. Be patient—your phone’s just struggling with a heavy load.On the menu that pops from the bottom of the screen, choose Telegram, and then select the chat named Saved messages. This is a chat only you can see, and it will serve as your sticker bank. Unlike WhatsApp, Telegram doesn’t store your favorite stickers in a quick-access reservoir right beside the typing field, but you’ll be able to snatch them out of your Saved messages chat and forward them to any of your Telegram contacts. This also means you won’t have a quick way to save incoming stickers like you did on WhatsApp, so you’ll have to forward them from one chat to the other.

How Does Telegram Make Money?

Telegram is a free app and runs on donations. According to a blog on the telegram: We believe in fast and secure messaging that is also 100% free. Pavel Durov, who shares our vision, supplied Telegram with a generous donation, so we have quite enough money for the time being. If Telegram runs out, we will introduce non-essential paid options to support the infrastructure and finance developer salaries. But making profits will never be an end-goal for Telegram.

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