A karyotype shows the shape, relative sizes and general structures of an organism's chromosomes. This technique, which uses special dyes and microscopes to view the chromosomes, is very useful for detecting large mutatio... More »

The threadlike structures found in a nucleus are called chromosomes. Chromosomes are found in all of the body's cells except for red blood cells, which are referred to as anuclear. They are composed of DNA that carries g... More »

The rod shaped structures in the nucleus of a cell are chromosomes. They carry genetic material in a "rod" of DNA that is bonded to various proteins in the cell nucleus. More »

The function of a cell membrane, also referred to as the plasma membrane, is to protect the structures within the cell, give shape to the cell and support its structure. More »

A normal human karyotype typically contains 23 pairs of chromosomes. Abnormalities in the number of chromosomes may result in genetic defects or serious health issues. More »

During prophase, a cell prepares itself for cell division by condensing its genetic material into separate chromosomes. The chromatin fibers, which were previously relaxed and loose, coil tightly into organized chromosom... More »

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The nucleus of a cell contains chromosomes, which are made from DNA, and the nucleolus. The cell nucleus also regulates the production of important proteins in the rest of the cell. Without both chromosomes and the nucle... More »