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Biology I: yeast, Drosophila and C. elegans

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Yeast Reproduction

Обзор

Saccharomyces cerevisiae is a species of yeast that is an extremely valuable model organism. Importantly, S. cerevisiae is a unicellular eukaryote that undergoes many of the same biological processes as humans. This video provides an introduction to the yeast cell cycle, and explains how S. cerevisiae reproduces both asexually and sexually Yeast reproduce asexually through a process known as budding. In contrast, yeast sometimes participate in sexual reproduction, which is important because it introduces genetic variation to a population. During environmentally stressful conditions, S. cerevisiae will undergo meiosis and form haploid spores that are released when environmental conditions improve. During sexual reproduction, these haploid spores fuse, ultimately forming a diploid zygote. In the lab, yeast can be genetically manipulated to further understand the genetic regulation of the cell cycle, reproduction, aging, and development. Therefore, scientists study the reproduction of yeast to gain insight into processes that are important in human biology.

Процедура

Despite being a simple unicellular eukaryote, Saccharomyces cerevisiae serves as a valuable model organism because its cellular processes, such as the cell cycle, resemble those found in higher order eukaryotes, like us. In the yeast cell cycle, cell growth and cell division are tightly linked and are dependent on factors such as nutrient concentration. Depending on environmental cues, yeast can undergo asexual or sexual reproduction to produce new cells. This video will give you an overview on the yeast cell cy

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0:00

Overview

0:56

Yeast Cell Cycle

2:45

Sexual Reproduction in Yeast

5:02

Applications

7:20

Summary

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