Recent experiments in a lab have focused on trying to understand cellular mechanisms that underlie epilepsy. Many of the studies involve recording electrical activity in neurons from brains of adult fruit flies (Drosophila). Brains in all animals are made up of a collection of highly specialized cells surrounded by fluid. […]

Details: Explore the World Fact Book page of Central Intelligence Agency website at https://www.cia.gov/library/publications/the-world-factbook/. Select two countries from among those represented on the global map on the webpage. Hovering over the map with your computer’s mouse will highlight the countries represented, but you may also type the country’s name in […]

Think about a man who has been exercising. His arterial receptors detect a rise in his blood CO2 and send this information to the brain. He needs to increase both the rate and depth of his breathing. List and explain the action of each region of the brain needed to […]

In humans, a recessive mutation results in rosy red lips. Another recessive mutation causes long, curly lashes. The two genes r and l are on the same chromosome and are 20 mu apart. If two heterozygous individuals cross, what is the fraction of the offspring that will have both red […]