its a different colour and shape
The cells in an onion tip but not the onion itself are usually actively dividing cells located at the growing tip of the onion root, known as the root cap cells. These cells help protect the delicate meristematic cells responsible for root growth and can often be found in the root zone of plants.
Scientists can examine the tip of an onion root by preparing a thin section with a microtome and staining it to make the cells visible under a microscope. They can then observe the different cell types in the root tip, such as root cap cells, meristematic cells, and elongating cells. This allows them to study the process of cell division and growth in the root tissue.
When examining an onion root tip slide under a microscope, you can observe the different stages of cell division, such as interphase, prophase, metaphase, anaphase, and telophase. This allows you to study the process of mitosis and observe the structure and arrangement of the cells in the root tip.
Acetocarmine is a DNA specific stain like feulgen stain, so the super coiled chromosomes during different stages of mitosis present in the Onion root tip cells can be visualized perfectly by treating with this stain.
The cells in the onion root tip are typically smaller and more uniform in size compared to the cells in a whitefish embryo. Additionally, the onion root tip cells are actively dividing, while the whitefish embryo cells are undergoing differentiation and organ development.
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Mitosis.
The mitotic index for the onion root tip is typically around 18-20%, meaning that around 18-20% of cells in the onion root tip are actively undergoing mitosis at any given time. This high mitotic index is due to the rapid growth and development of the root tip.
The root tip of an onion is a good place to look for dividing cells because this is where active cell division takes place for root growth. The root tip contains a region called the apical meristem, which is responsible for producing new cells through mitosis. These dividing cells are essential for the growth and development of the root system.
Onion root tip cells generally cycle through the cell cycle in about 24 hours. This means that all the stages of the cell cycle, including interphase, mitosis, and cytokinesis, occur within this time frame. This rapid cell cycle allows for continuous growth and development of the onion root tip.
A microscope is the best tool for a student to use to observe mitosis in an onion root tip.
It is a type of white fish that demonstrates mitosis much like an onion root tip.