A doctor studies cells from the spinal Fluid from a very sick baby. After analyzing the lipid content in the cells, the doctor finds a very high concentration of a fatty

toxic substance called GM2 ganglioside. This toxic substance is normally broken down in

healthy cells. She suspects that this baby has a genetic disorder affecting one

particular organelle involved in recycling and breaking down larger molecules

2 Which organelle or cellular structure might not be able to perform its job and have defective proteins as a result

of this genetic disorder? Explain your answer below.

You will create a molecular clock model for an arthropod gene. follow these guidelines to make your model: . your timeline will span from 90 million years ago to the present. the common ancestor in your model is an arthropod that lived 90 million years ago. the gene that you'll track codes for a protein in the species venom . the dna sequence youll track contains 10 nitrogen bases. you can choose the order of the bases and where the mutations occur. this gene mutates at a rate of approximately 0.76 base pairs every 17.1 million years. to build your model,/ calculate the estimated time period it takes for 1 base pair to mutate. the first time period will only show the common ancestor. at the beginning of the second time period, three lineages will diverge from the common ancestor, each with a different mutation in their gene sequences. the first and third descendant species will survive for the rest of the timeline. the second descendant species was extinct 50 million years ago. calculate how long it will take for one full base pair mutation to occur. explain your reasoning by constructing a mathematical equation