Giant chromosomes, light micrograph F006 / 9794
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Giant chromosomes, light micrograph F006 / 9794
Giant chromosomes, light micrograph. Polytene chromosomes are over-sized chromosomes that have developed from standard chromosomes. They are commonly found in the saliva of the fruit fly Drosophila melanogaster. They are formed from repeated sequences of DNA (deoxyribonucleic acid) replication without nuclear division. A process known as endoreduplication. Polytene chromosomes increase cell volume and metabolic rate, as there are more genes to be expressed. Magnification: x20 when printed at 10 centimetres wide
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 9257925
© STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY
Giant Chromosome Polytene Chromosome Scientific Imaging Biochemistry Deoxyribonucleic Acid Genetics Light Micrograph Molecular Structure
EDITORS COMMENTS
This print showcases the intricate beauty of giant chromosomes, specifically polytene chromosomes, found in the saliva of the fruit fly Drosophila melanogaster. The image, captured by renowned scientific photographer Steve Gschmeissner, reveals a mesmerizing molecular structure under a light microscope. Polytene chromosomes are unique as they have developed from standard chromosomes through a process called endoreduplication. This means that instead of undergoing nuclear division, these oversized chromosomes replicate their DNA sequences repeatedly without separating into individual cells. As a result, polytene chromosomes increase both cell volume and metabolic rate due to the expression of more genes. The white background highlights the detailed complexity and elegance of these giant structures. With a magnification level of x20 when printed at 10 centimeters wide, this photograph allows viewers to appreciate the remarkable intricacies within each chromosome. Beyond its aesthetic appeal, this image holds significant value for research and medicine. It serves as an invaluable tool for geneticists and biochemists studying genetics and cellular processes such as endomitosis and endoreplication. Moreover, it offers insights into molecular structures related to DNA (deoxyribonucleic acid), contributing to our understanding of fundamental biological mechanisms. Overall, this stunning scientific illustration provides us with an awe-inspiring glimpse into the world of genetics while highlighting the immense potential held within microscopic organisms like Drosophila melanogaster's giant polytene chromosomes.
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