Question

Question 9 1 pts Why does cellular aging (or senescence) occur in eukaryotic organisms? O DNA in eukaryotes is linear, and the ends of the DNA shorten each time replication occurs Telomeres extend the length of the DNA until it becomes too unwieldy to replicate well Extracellular signals tell the cells to stop dividing The nucleotides in the DNA eventually degrade and don't adhere well to each other anymore Question 10 1 pts What evidence do we have against the rate of living theory? Organisms that have short lifespans tend to have lower rates of mutation

Answer 1

Extracellular signals tell the cells to stop dividing,they are of transcriptional factor which control the nutrient availability to the dividing cells and here after some time these decreses the nutriemt availability so decrese the life span. Telomere decreses so life span decreses.