Giant chromosomes, light micrograph P657 / 0038

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Giant chromosomes, light micrograph P657 / 0038

Giant chromosomes. Light micrograph of giant (polytene) chromosomes from a fruit fly (Drosophila busckii). These chromosomes are formed from repeated rounds of DNA (deoxyribonucleic acid) replication without nuclear division. A process known as endoreduplication. Identical strands sit side by side. The characteristic banding pattern corresponds to areas of high and moderate DNA density. The polytene chromosomes increase cell volume and metabolic rate, as there are more genes to be expressed. The size of the chromosomes also allows for easy study by scientists. Magnification: x325 when printed at 10 centimetres wide

Science Photo Library features Science and Medical images including photos and illustrations

Media ID 9304059

© POWER AND SYRED/SCIENCE PHOTO LIBRARY

Animal Body Banded Bands Chromosome Chromosomes Drosophila Busckii Fruit Fly Genetic Giant Polytene Strand Strands Deoxyribonucleic Acid Genetics Light Micrograph Light Microscope

EDITORS COMMENTS
This print showcases the intricate beauty of giant (polytene) chromosomes from a fruit fly, scientifically known as Drosophila busckii. These remarkable chromosomes are formed through multiple rounds of DNA replication without nuclear division, a process called endoreduplication. The identical strands elegantly align side by side, displaying a characteristic banding pattern that corresponds to areas of high and moderate DNA density. The polytene chromosomes play a crucial role in increasing cell volume and metabolic rate due to their ability to express more genes. Their large size also makes them easily accessible for study by scientists, enabling deeper insights into genetics and biological processes. Under the magnification level of x325 when printed at 10 centimeters wide, this light micrograph offers an extraordinary glimpse into the genetic architecture within the animal body. The image highlights the banded structure of these chromosomes while emphasizing their significance in understanding DNA organization and function. Captured by POWER AND SYRED/SCIENCE PHOTO LIBRARY, this photograph represents not only the wonders of biology but also serves as a testament to ongoing research efforts aimed at unraveling the complexities hidden within our genetic makeup.

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