Comprehensive teaching aid system for genetic science

A comprehensive teaching aid system for genetic science at least comprising:

• a two-strand deoxyribonucleic acid (DNA), when twisted forms a double helix model composed of several adjacently and oppositely connected deoxynucleotide models;
• and a ribonucleic acid (RNA) single-strand model composed of several adjacently connected ribonucleotide models;
• a nucleotide comprising deoxyribonucleotide or ribonucleotide, in which a ribose can be a deoxyribose or a ribose, respectively depending on whether the ribose is present in a DNA or an RNA molecule;
• and a nucleotide model comprising a phosphate model, a ribose model and a base model connected in sequence;
• wherein, between two adjacently disposed nucleotide models, the ribose model is connected to the phosphate model to form a detachable and flexible chain structure;
• the base model is laterally connected to the ribose model, and two base models in two oppositely disposed ribose models are complementarily connected via special geometric structure with magnetic attraction;
• and a DNA double helix structure can be freely rotated along an axial direction;
• wherein, in a single nucleotide model, the ribose model and the phosphate model form an one-piece structure, and a spherical connection body is disposed at one end of the ribose model away from the phosphate end;
• and a spherical receiving cavity that is axially-opened is disposed in the phosphate model, and the spherical receiving cavity is mated with a spherical connection body in another nucleotide model which is adjacently disposed;
• the phosphate model further comprises at least one buffer slot disposed on a side thereof.

A comprehensive teaching aid system for genetic science at least comprising:

• a two-strand deoxyribonucleic acid (DNA), when twisted forms a double helix model composed of several adjacently and oppositely connected deoxynucleotide models;
• and a ribonucleic acid (RNA) single-strand model composed of several adjacently connected ribonucleotide models;
• a nucleotide comprising deoxyribonucleotide or ribonucleotide, in which a ribose can be a deoxyribose or a ribose, respectively depending on whether the ribose is present in a DNA or an RNA molecule;
• and a nucleotide model comprising a phosphate model, a ribose model and a base model connected in sequence;
• wherein, between two adjacently disposed nucleotide models, the ribose model is connected to the phosphate model to form a detachable and flexible chain structure;
• the base model is laterally connected to the ribose model, and two base models in two oppositely disposed ribose models are complementarily connected via special geometric structure with magnetic attraction;
• and a DNA double helix structure can be freely rotated along an axial direction;
• the comprehensive teaching aid system further comprises:
• a DNA replication plate at least comprising a first groove and a second groove which are respectively adapted with the two chains of the DNA double helix model, and at least part of a distance between the first groove and the second groove varies gradually, and a minimum distance between the first groove and the second groove is equal to a distance between two oppositely disposed ribose models in the DNA double helix model;
• when the distance between the first groove and the second groove is greater than the distance between the two oppositely disposed ribose models, the complementarily connected base models are separated to form two DNA single strands;
• wherein the DNA replication plate further comprises a third groove and a fourth groove disposed between the first groove and the second groove, the first groove and the third groove, as well as the second groove and the fourth groove being respectively disposed in parallel, a distance between the two grooves parallel to each other being equal to a distance between the two oppositely disposed ribose models, and several free deoxynucleotide models base-paired with a DNA single strand in the first groove or the second groove being disposed in the third groove or the fourth groove, respectively;
• when a free deoxynucleotide models disposed in the third groove and a DNA single strand disposed in the first groove, as well as free deoxynucleotide models disposed in the fourth groove and a DNA single strand disposed in the second groove are complementarily base-paired and then each thus paired free nucleotide is laterally head-to-tail jointed, respectively, to form two new DNA double helix models, the replication of the original DNA is completed.