概括
研究人员成功地克隆了一头猪,Xena,提供了器官移植的潜力. 然而,仍然存在担忧,因为猪逆转录病毒可能会感染人类细胞,造成严重的健康风险.
科学领域:
- 生物技术是生物技术.
- 遗传学 遗传学 是一个
- 兽医科学 兽医科学 兽医科学
背景情况:
- 克隆猪在历史上面临着低成功率和不可预测结果的挑战.
- 猪和人类之间的生理相似性使它们成为异种移植的有希望的候选人.
相关概念视频
01:09Recombinant DNA
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00:53Transgenic Organisms
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01:59Plant Breeding and Biotechnology
Crop cultivation has a long history in human civilization, with records showing the cultivation of cereal plants beginning at around 8000 BC. This early plant breeding was developed primarily to provide a steady supply of food.
00:53Transgenic Organisms
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01:20The Central Dogma
The central dogma explains the flow of genetic information from DNA nucleotides to the amino acid sequence of proteins.
RNA is the Missing Link Between DNA and Proteins
In the early 1900s, scientists discovered that DNA stores all the information needed for cellular functions and that proteins perform most of these functions. However, the mechanisms of converting genetic information into functional proteins remained unknown for many years. Initially, it was believed that a single gene is...
RNA is the Missing Link Between DNA and Proteins
In the early 1900s, scientists discovered that DNA stores all the information needed for cellular functions and that proteins perform most of these functions. However, the mechanisms of converting genetic information into functional proteins remained unknown for many years. Initially, it was believed that a single gene is...
01:08Cloning of Dolly the Sheep
The first successfully cloned mammal was Dolly, a sheep, born on 5th July 1996 at Roslin Institute, Scotland. The cloned sheep was named after the American singer Dolly Parton. Dolly lived for seven years and died of respiratory complications, which is speculated to be due to the actual age of her DNA. Because the DNA in cloned cells belongs to an older individual, the cloned individual’s life expectancy may be affected. Indeed, analysis of Dolly’s DNA revealed shorter telomeres than other...