B and R are linked genes in fruit flies. A fruit fly of the genotype B R/b r is testcrossed with b r/b r. In 84 percent of the meiosis, there are no chiasmata between the linked genes; in 16 percent of the meiosis, there is one chiasma between the genes. What proportion of the progeny will be B r/b r?

1. you serve a volleyball with a mass of 2.1 kg. the ball leaves your hand with a speed of 30 m/s. the ball has energy. calculate it. 2. a baby carriage is sitting at the top of a hill that is 21 m high. the carriage with the baby weighs 12 n. the carriage has energy. calculate it. 3. a car is traveling with a velocity of 40 m/s and has a mass of 1120 kg. the car has . calculate it.