A model component of DNA double helix structure

Abstract

The utility model relates to DNA structure model technical field, and disclose a DNA double helix structure model component, including DNA single strand component, the DNA single strand component includes the grafting branch, the grafting branch one end is fixed with the insertion rod, the other end of DNA single strand component is opened and has the insertion hole, the bottom of DNA single strand component is fixed with the male insertion rod, the bottom insertion of male insertion rod has G letter base module, the C letter base module is spliced and installed to G letter base module, the bottom insertion of male insertion rod has A letter base module, the bottom splicing of A letter base module installs T letter base module. The utility model can solve the problem of DNA molecule structure abstract complex, student is difficult to clearly recognize through traditional teaching, still can adapt student hands -on experiment demand, aiming at the defect that existing model is not detachable, student is not convenient operation, and can improve the problem that traditional teaching lacks interactivity and interestingness, student learning interest is insufficient.

Description

Technical Field

[0001] This utility model relates to the field of DNA structure modeling technology, specifically a DNA double helix structure modeling component. Background Technology

[0002] Against the backdrop of vigorously promoting quality education in the education field, the new high school textbooks have explicitly included experimental content in which students assemble DNA structure models by themselves. This teaching arrangement has put forward targeted requirements for supporting teaching aids, requiring model tools that can be adapted to students' hands-on practice and help them understand DNA structure.

[0003] Currently, most DNA structure models are demonstration-oriented designs. The abstract and complex structure of DNA molecules makes it difficult for students to clearly understand its basic structural features through traditional teaching methods. They cannot intuitively understand the principle of complementary base pairing, the correct combination of different bases, and the antiparallel orientation of DNA single strands and the directional characteristics of molecules. This makes it difficult for students to understand complex biological structures. Furthermore, these models are not disassembled and are inconvenient for students to operate, failing to meet students' needs for hands-on experiments. They cannot satisfy students' ability to independently complete the practical process from single-strand assembly and base pairing to overall tandem connection. There is a lack of models for students to practice with, and they lack interactivity and fun, resulting in insufficient student interest and making it difficult to achieve the ideal teaching quality and learning outcomes.

[0004] Therefore, we propose a DNA double helix structure modeling component to address the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a DNA double helix structure model component to address the problem that existing DNA structure models are mostly demonstration-oriented designs, which makes it difficult for students to understand complex biological structures during teaching and cannot meet the needs of students' hands-on experiments. They are also unable to meet the practical needs of students to independently complete the process from single-strand assembly and base pairing to overall tandem connection, resulting in a lack of interactivity and fun, leading to insufficient student interest and difficulty in achieving ideal teaching quality and learning outcomes.

[0006] This utility model provides the following technical solution: a DNA double helix structure model component, including a DNA single-strand component, the DNA single-strand component including a graft, one end of the graft is fixed with a graft rod, the other end of the DNA single-strand component is provided with a insertion hole, and the bottom surface of the DNA single-strand component is fixed with a convex graft rod.

[0007] A G-shaped base module is inserted into the bottom of the convex plug, and a C-shaped base module is spliced ​​and installed on the G-shaped base module. An A-shaped base module is inserted into the bottom of the convex plug, and a T-shaped base module is spliced ​​and installed on the bottom of the A-shaped base module.

[0008] Preferably, the G-shaped base module has an insertion hole inside, which is inserted into the convex insertion rod, and a branch is fixed on the bottom surface of the G-shaped base module.

[0009] Preferably, the C-shaped base module has a through hole, the insert is inserted into the through hole, and the C-shaped base module is inserted into the convex insert through the through hole.

[0010] Preferably, the A-shaped base module has a second insertion hole inside, which is inserted into the convex insertion rod, and the bottom surface of the A-shaped base module is fixed with a second insertion branch.

[0011] Preferably, the T-shaped base module has a second through hole, the second insert is inserted into the second through hole, and the T-shaped base module is inserted into the convex insert through the second through hole.

[0012] Preferably, the DNA single-strand component, the G-base module, the C-base module, the A-base module, and the T-base module are made of plastic.

[0013] This utility model has the following beneficial effects:

[0014] 1. This model component can specifically address the problem that the abstract and complex structure of DNA molecules makes it difficult for students to clearly understand through traditional teaching. It can help students clearly grasp the basic structural characteristics of DNA. With the help of the compatibility between the components, students can intuitively understand the principle of complementary base pairing and the correct combination of different bases. Through the component labels, students can also clearly grasp the antiparallel orientation of DNA single strands and the directional characteristics of molecules, transforming the abstract DNA molecular structure into a concrete understanding, effectively reducing the difficulty for students to understand complex biological structures.

[0015] 2. This model component is designed to meet the needs of students' hands-on experiments. Addressing the shortcomings of existing models that are not detachable and inconvenient for students to operate, it adopts a detachable plug-in design and is made of lightweight materials, allowing students to independently complete the entire process from single-strand assembly and base pairing to overall tandem connection. This not only meets the experimental requirements of the new high school textbooks, which require students to assemble DNA structure models by themselves, but also fills the gap in existing demonstration models that cannot be used for students' hands-on practice.

[0016] 3. This model component addresses the lack of interactivity and engagement in traditional teaching, as well as the insufficient student interest, thereby enhancing the effectiveness and enjoyment of teaching and learning. Through hands-on model building, students can actively consolidate core knowledge related to DNA structure, overcoming the limitations of passively receiving knowledge in traditional teaching. Furthermore, the process of successfully assembling the model to form a complete double helix further stimulates students' learning interest, strengthens the interactivity of teaching and learning, and helps achieve ideal teaching quality and learning outcomes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the DNA single-stranded component structure of this utility model.

[0019] Figure 3 The DNA single-stranded component of this invention is linked to multiple base modules in an explosive manner. Figure 1 .

[0020] Figure 4 The DNA single-stranded component of this invention is linked to multiple base modules in an explosive manner. Figure 2 .

[0021] In the diagram: 1. DNA single-stranded component; 101. Graft; 102. Graft rod; 103. Insertion hole; 104. Convex insertion rod; 2. G-shaped base module; 21. Insertion hole one; 22. Graft one; 3. C-shaped base module; 31. Through hole one; 4. A-shaped base module; 41. Graft hole two; 42. Graft two; 5. T-shaped base module; 51. Through hole two. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example:

[0024] This embodiment aims to address the problem that model components are not conducive to students' understanding of structural relationships, thus failing to meet students' hands-on experiment needs and resulting in insufficient engagement and knowledge consolidation. Please refer to [link / reference needed]. Figure 1 - Figure 4 A DNA double helix structure model component includes a DNA single-strand component 1, which includes a graft 101. One end of the graft 101 is fixed with a graft rod 102, and the other end of the DNA single-strand component 1 has a socket 103. A convex graft rod 104 is fixed on the bottom surface of the DNA single-strand component 1.

[0025] A G-shaped base module 2 is inserted into the bottom of the convex plug 104. A C-shaped base module 3 is spliced ​​and installed on the G-shaped base module 2. An A-shaped base module 4 is inserted into the bottom of the convex plug 104. A T-shaped base module 5 is spliced ​​and installed on the bottom of the A-shaped base module 4.

[0026] The G-shaped base module 2 has an insertion hole 21 inside, which is inserted into the convex insertion rod 104. The bottom surface of the G-shaped base module 2 is fixed with a branch 22. The C-shaped base module 3 has a through hole 31 inside, which is inserted into the through hole 31. The C-shaped base module 3 is inserted into the convex insertion rod 104 through the through hole 31.

[0027] The A-shaped base module 4 has an insertion hole 41 inside, which is inserted into the convex insertion rod 104. The bottom surface of the A-shaped base module 4 is fixed with a branch 42. The T-shaped base module 5 has a through hole 51 inside, which is inserted into the through hole 51. The T-shaped base module 5 is inserted into the convex insertion rod 104 through the through hole 51.

[0028] It should be noted that the cross-section of the module representing the base, composed of left and right parts, is square or cylindrical. The mating surfaces of the left and right parts of each module are connected by interlocking planar surfaces that match each other, such as convex or concave spherical surfaces, convex or concave conical surfaces, or convex or concave serrated surfaces. Each of the left and right parts has an insertion hole at both ends that coincides with the center line. The sides of the bases may be marked with "A", "T", "C", or "G" to distinguish them, or they may not be marked. The markings in the text are for the purpose of clearly understanding each component.

[0029] Furthermore, the shape of the module representing DNA single-strand component 1 can be any one of the following: spherical, ellipsoidal, square, spatial polyhedron, cylindrical, or polygonal.

[0030] The DNA single-stranded component 1, G-base module 2, C-base module 3, A-base module 4, and T-base module 5 are made of plastic.

[0031] Students can quickly identify the four bases by the "A", "T", "C" and "G" markings on the base modules. At the same time, based on the fitting relationship between the convex spherical surface of the G base module 2 and the concave spherical surface of the C base module 3, and the convex conical surface of the A base module 4 and the concave conical surface of the T base module 5, students can intuitively grasp the principle of complementary base pairing, understand the correct combination of A and T, and G and C, and clearly recognize the basic structural features of DNA base pairing.

[0032] In this embodiment: The student first takes out the DNA single-strand component 1, and clarifies the structure of the graft 101 and the socket 103 on the component. During assembly, the graft 101 of one DNA single-strand component 1 is aligned with the socket 103 of another DNA single-strand component 1, ensuring that the graft 102 on the end of the graft 101 is accurately inserted into the socket 103, thus completing the stable connection of the two single-strand components. Following this method, multiple DNA single-strand components 1 are gradually connected in series to form a complete DNA single-strand backbone.

[0033] During the process, students can intuitively understand the direction of DNA single strands by observing the "5" and "3" markings on the graft 101. The two DNA single strands that are finally assembled are in an antiparallel state, with one single strand extending from the "5" end to the "3" end and the other single strand extending from the "3" end to the "5" end, which helps students clearly grasp the directional characteristics of DNA molecules.

[0034] Next, the GC base pair assembly is completed. First, take the G-shaped base module 2 and the C-shaped base module 3. Align the insert 22 at the bottom of the G-shaped base module 2 with the through hole 31 inside the C-shaped base module 3 and insert it. This allows the two to be precisely spliced ​​together through the concave and convex structure to form a GC base pair. Then, align the insertion hole 21 on the G-shaped base module 2 with the convex insert 104 on the insertion branch 101 of one DNA single-strand component 1 and insert it. At the same time, align the through hole 31 on the C-shaped base module 3 with the convex insert 104 on the insertion branch 101 of the other DNA single-strand component 1 to complete the connection of the GC base pair with the two single strands.

[0035] Then, the AT base pair assembly is completed. Take the A-shaped base module 4 and the T-shaped base module 5. Align the second insert 42 at the bottom of the A-shaped base module 4 with the second through-hole 51 inside the T-shaped base module 5 and insert it to achieve the splicing of the AT base pair. Next, align the second insert 41 on the A-shaped base module 4 with the convex insert 104 of one DNA single-strand component 1 insert and insert it. Then align the second through-hole 51 of the T-shaped base module 5 with the convex insert 104 of the other DNA single-strand component 1 insert and insert it to complete the connection of the AT base pair with the two single strands.

[0036] After completing the construction of the single-stranded backbone and base pairing, students sequentially connect all the basic units with connected base modules. The grafting branch 101 extending from the DNA single-stranded component 1 of the previous basic unit is inserted into the insertion hole 103 of the DNA single-stranded component 1 of the next basic unit, and so on, until a complete DNA double helix structure model is formed.

[0037] The entire hands-on assembly process transforms the DNA molecular structure into a concrete, practical model, which not only reduces the difficulty of understanding complex biological structures but also stimulates students' learning interest through hands-on construction. This allows students to actively consolidate core knowledge such as complementary base pairing and antiparallel single strands in practice, effectively enhancing the interactivity and teaching effectiveness of teaching and learning.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A DNA double helix structure model component, comprising a DNA single-stranded component (1), characterized in that: The DNA single-strand assembly (1) includes a graft (101), one end of which is fixed with a graft rod (102), the other end of which is provided with a socket (103), and the bottom surface of the DNA single-strand assembly (1) is fixed with a convex graft rod (104). A G-shaped base module (2) is inserted into the bottom of the convex plug (104), a C-shaped base module (3) is spliced ​​and installed on the G-shaped base module (2), an A-shaped base module (4) is inserted into the bottom of the convex plug (104), and a T-shaped base module (5) is spliced ​​and installed on the bottom of the A-shaped base module (4).

2. The DNA double helix structure model component according to claim 1, characterized in that: The G-type base module (2) has an insertion hole (21) inside, which is inserted into the convex insertion rod (104), and the bottom surface of the G-type base module (2) is fixed with a branch (22).

3. The DNA double helix structure model component according to claim 2, characterized in that: The C-shaped base module (3) has a through hole (31) inside, the insert (22) is inserted into the through hole (31), and the C-shaped base module (3) is inserted into the convex insert (104) through the through hole (31).

4. The DNA double helix structure model component according to claim 1, characterized in that: The A-shaped base module (4) has a second insertion hole (41) inside, which is inserted into the convex insertion rod (104). The bottom surface of the A-shaped base module (4) is fixed with a second insertion branch (42).

5. A DNA double helix structure model component according to claim 4, characterized in that: The T-shaped base module (5) has a through hole two (51) inside, the insert two (42) is inserted into the through hole two (51), and the T-shaped base module (5) is inserted into the convex insert (104) through the through hole two (51).

6. A DNA double helix structure model component according to claim 1, characterized in that: The DNA single-stranded component (1), G-base module (2), C-base module (3), A-base module (4), and T-base module (5) are made of plastic.

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