Categories
Cell Biology

DNA in numbers

In previous articles, we talked about the two types of cell division, mitosis, and meiosis. We also described the differences between the terms chromatin, chromosome, and sister chromatid. However, if at this point someone asked you to find the number of chromosomes, chromatids, DNA molecules, and others, would you still have difficulty answering? If your […]

Categories
Cell Biology

DNA organization inside the nucleus

Chromosomes, chromatin, nucleosomes, genes, alleles? What is the difference between these terms? What are their roles? And how are they organized inside each one of the small cells of an organism? When you hear these words, you might think that they are pretty much the same, or you may not be able to distinguish their […]

Categories
Cell Biology

Types of cell division

Have you ever wondered how the organs of an embryo develop inside the womb, how the immune system heals infections, or how a tree becomes taller with time? All of the organisms survive, grow, and reproduce by creating new cells. But how do new cells occur? No matter the organism or the type of cells, […]