In mice, albinism (b) is recessive to normal brown coloration (B). When an albino female was crossed with a brown male, they produced 2 brown offspring and 2 albino offspring. What is the genotype of the brown male parent?

Bb is his genotype. He passed his dominant allele 50% of the time and his resessive allele 50% of the time.

the transfer of energy between two molecules spaced just nanometers apart plays a key role in many technologies, including photovoltaics, quantum information systems, lighting, and sensors, as well as in biophysics to measure nanometer distances and in photosynthesis. but an open question in this area is what effect, if any, the surrounding photonic environment has on this nanoscale energy transfer. by designing and performing a carefully controlled experiment to answer this question, scientists have settled the debate and found clues to improving the efficiency of many of the technologies that rely on this process.

explanation:

lizards have adapted to life in the desert. some desert lizards have toes with spiny scales to them run across the sand without sinking. some use the sand to hide from predators, or to search for small animals that they prey upon.