农作物化的分子遗传学
John F Doebley1, Brandon S Gaut, Bruce D Smith
1Department of Genetics, University of Wisconsin, Madison, WI 53706, USA. jdoebley@wisc.edu
Cell
|December 28, 2006
概括
古代人类通过遗传变化化了大米和小麦等关键作物. 这场农业革命涉及改变植物发育途径,以满足全球粮食需求.
科学领域:
- 农业科学 农业科学
- 遗传学 遗传学 是一个
- 考古学的考古学
背景情况:
- 大约1万年前,人类社会从狩猎和采集过渡到农业.
- 到4000年前,主要的作物物种是人类生存必不可少的,包括大米,小麦和玉米.
- 这一时期标志着新石器时代的农业革命,从根本上重塑了人类文明.
相关概念视频
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02:08Gene Conversion
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02:50Transgenic Plants
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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.
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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...
02:08Gene Conversion
Other than maintaining genome stability via DNA repair, homologous recombination plays an important role in diversifying the genome. In fact, the recombination of sequences forms the molecular basis of genomic evolution. Random and non-random permutations of genomic sequences create a library of new amalgamated sequences. These newly formed genomes can determine the fitness and survival of cells. In bacteria, homologous and non-homologous types of recombination lead to the evolution of new...