The figure shown represents several different versions of hu…

The figure shown represents several different versions of human chromosome 2. In each one, the region XXX of the chromosome represents the gene that codes for the light chain of the myosin protein (the diagrams are not to scale). Image 1 represents the nonmutant human chromosome 2. Among images 2–4, which represents a mutation of chromosome 2? ​ 1. ——-XXX——————- 2. ——-XXX—————————————XXX——- 3. ——-XX—————- 4. ——-XXX—-XXX——–

A number of mutations have been described in G proteins that…

A number of mutations have been described in G proteins that have profound effects on their activity. For example, some mutations greatly increase the affinity of the G protein for GDP, making it very difficult for GDP to be exchanged for GTP. Other mutations prevent the hydrolysis of GTP to GDP. For each of the statements that describes a malfunction in cellular response, indicate the type of mutation that is responsible. ​ The MAP kinase pathway is continually activated, even in the absence of a signaling molecule. Which type of mutation could be responsible for this malfunction in cellular response?