What primary role does each structure play

What are the types of mutations, and how does each alter the encoded protein? college level answer

Genetic disorders can result when sister chromatids fail to seperate properly. during what phase is this problem most likely to occur?

Been sitting here trying to take this test and don't know this answer! place the events of a feedback mechanism associated with body temperature in the correct order. ·nerve cells send message from skin to the brain ·body returned to normal temperature around 98.6 degrees f ·temperatures regulation center in the brain sends out signals ·body temperature exceeds 98.6 degrees f ·sweat glands throughout the body activate to cool off skin surface it is a 1 through 5 question in biology!