概括
在莲花杂交物和F2种群中检测到一种新物质,在母物种中不存在. 这一发现表明,异合体个体中的基因相互作用可能解释了它的存在.
科学领域:
- 植物遗传学 植物遗传学
- 生物化学 生物化学
- 化学生态化学生态学
背景情况:
- 莲花物种的杂交可以导致新的生物化学特征.
- 了解对二次代谢物的遗传贡献在植物育种中至关重要.
研究的目的:
- 为了研究莲花杂交和F2种群的未化花的化学成分.
- 为了识别任何在杂交后代中存在的新化合物,但不在父母物种中.
主要方法:
- 对未经水解的花提取物进行染色学分析.
- 父母物种,F1杂交物种和F2个体之间的比较分析.
主要成果:
- 在两个莲花杂交物和两个F2个体的花提取物中检测到一种以前未知的物质.
- 这种物质始终不在父母莲花物种的提取物中.
结论:
- 新型物质在杂交动物中的存在表明它是基因相互作用的产物.
- 需要进一步的研究来确定这种混合物质的确切化学性质和遗传基础.
相关概念视频
01:18Dihybrid Crosses
Overview
02:27Trihybrid Crosses
Trihybrid Crosses
Some of Mendel’s crosses examined three pairs of contrasting characteristics. Such a cross is called a trihybrid cross. A trihybrid cross is a combination of three individual monohybrid crosses. For example, plant height (tall vs. short), seed shape (round vs. wrinkled), and seed color (yellow vs. green).
The F1 generation plants of a trihybrid cross are heterozygous for all three traits and produce eight gametes. Upon self-fertilization, these gametes have an equal chance to...
Some of Mendel’s crosses examined three pairs of contrasting characteristics. Such a cross is called a trihybrid cross. A trihybrid cross is a combination of three individual monohybrid crosses. For example, plant height (tall vs. short), seed shape (round vs. wrinkled), and seed color (yellow vs. green).
The F1 generation plants of a trihybrid cross are heterozygous for all three traits and produce eight gametes. Upon self-fertilization, these gametes have an equal chance to...
01:43Incomplete Dominance
Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.