ADN, Cromosomas y Genes

Cell Structure and DNA Organization

In this section, the speaker discusses the structure of cells and the organization of DNA within the nucleus.

Cell Organelles and Nucleus

• The cell contains organelles with vital functions, such as the nucleus that houses genetic information in the form of DNA.

• DNA, a biomolecule storing hereditary information, is composed of nucleotides made up of sugar, phosphate group, and nitrogenous base.

Chromosomes and Genetic Information

• In eukaryotic cells, DNA is densely packed into chromosomes in an organized manner. Chromosomes store genetic information inherited from parents.

• Humans have 23 pairs of chromosomes, with each pair carrying inheritable traits from both parents due to sexual reproduction.

DNA Structure and Genes

• DNA is associated with histone proteins forming chromatin, which contains genes – precise information about an organism's characteristics like hair type or eye color.