Summary of ¿Qué es el ADN? | Videos Educativos Aula365

00:00:00 - 00:05:00

The video explains that DNA is the primary genetic material of organisms and carries genetic information in the form of molecules. The structure of DNA is a double helix and has a complementary structure between the nucleotide pairs, known as complementarity of the strands. The DNA of two family members will be more similar than comparing it to that of a random person, making it essential to compare the remains' DNA to their son. With the length and complexity of DNA, it is impossible for two unrelated individuals to have similar DNA.

• 00:00:00 In this section, we learn that DNA is the primary genetic material of organisms and carries genetic information in the form of molecules. Each molecule of DNA is made up of thousands of nucleotides, which are composed of three parts: a phosphate group, an azucar group, and a nitrogenous base. There are four possible nitrogenous bases, including A, T, C, and G, which combined, form the polymer of DNA. The structure of DNA is a double helix and has a complementary structure between the nucleotide pairs. The proportion of each base is almost equal, with A matching T and C matching G, which is known as complementarity of the strands. The confirmation that humans share this structure is what makes them unique and non-replicable.
• 00:05:00 In this section, the speaker explains that DNA carries genetic information, and the DNA of two family members will be more similar than comparing it to that of a random person. Therefore, the DNA of the remains found will be compared to the DNA of their son, for whom there is no doubt about their relationship. It is impossible for two unrelated individuals to have similar DNA due to the length and complexity of DNA.