Medical Experimental DNA Model/Biological Model Medical Teaching Biology Double Helix DNA Structure Model
Medical Experimental DNA Model/Biological Model Medical Teaching Biology Double Helix DNA Structure Model
This DNA double helix model measures 22*22*68.5cm with a net weight of 1kg. It adopts multi-color differentiated assembly for each chemical component of DNA, with a stable base bracket, specially used for biological experiment teaching.
Color zoning clearly distinguishes bases, sugar and phosphate; standard double helix shape reproduces real molecular spatial conformation; solid material resists frequent handling damage; vertical large size adapts to classroom collective viewing.
Biology teachers easily visualize abstract genetic knowledge; students rapidly understand base pairing and DNA spatial structure; schools get durable experimental teaching supplies; science venues realize intuitive popular science display.
Superior to flat textbook illustrations with three-dimensional spiral presentation; more standardized than simple hand-assembled models with fixed scientific proportions; multi-color marking makes component recognition faster than single-color DNA models.
Product Description
Medical experimental DNA model/Biological model Medical teaching Biology double helix DNA structure model
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product name
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DNA molecular structure model
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size
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22*22*68.5cm
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weight
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1kg
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use
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Biological experiment
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This model demonstrates the pattern structure of the DNA double helix, in which two parallel polynucleocylic acid chains form a right-handed helix, with phosphoric acid on the surface of the cylinder, base pairwise pairs in the middle of the cylinder, and base pair planes perpendicular to the cylinder
Features This model is designed according to the Ministry of Education standard, and conforms to the J3212 standard issued by the Ministry of Education. The model is an instructional schematic model of B-type DNA molecular structure magnified 100 million times (for middle school use) and 200 million times (for university use). The famous double helix structure theory of DNA molecule was proposed by Watson and Crick in 1953, and later confirmed and revised by Wilkins. It satisfactorily explains many biological and physical characteristics of DNA molecules
Main basisMain parameters of this model:1, the double helix has a diameter of 20A 2, pitch 34A, the spacing of adjacent base pairs 3.4A; 3, the direction difference of adjacent bases is 36°; 4, the number of base pairs per spiral run 10 pairs;5, hydrogen bond length 25-40A
6, the size of the ditch width is about 20A,14A.
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