Chromosomes
This is a chromosome, a chromosome contains the genetic material. They are composed of DNA and Proteins. Every time a cell divides the chromosome has to be replicated! Both cells end up with the same genetic material. On the end of each chromosome is a long protective DNA sequence that is known as the TELOMERE. Each time the cell divides it has to cut a tiny portion of the telomere off, so as we age our telomeres get shorter and shorter. This cutting of the telomere eventually gets to a point where they are less protective and genes start to get impacted and this can start causing diseases. Interesting additions:1. Some cancers can activate genes that stop their telomeres from shortening, thus creating immortalized cell lines. 2. If you were to look at the telomeres on a human, you could predict their age extremely well, based on their telomeres length!
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A 70-year-old man presents with difficulty walking, particularly when turning, and a sensation of his feet being "stuck" to the floor. His gait is characterized by hesitation and freezing when initiating steps. Which of the following is most likely to be observed in this patient? A. Spasticity B. Foot drop C.Freezing of gait D. Romberg signBest Probiotics For Womens 2025: Are They More Effective?Effects of sugar on teeth
