1. The Liu family drove 660 km from Oakland to Barstow to visit friends. They left Oakland at 8:00 a. m. and arrived in Barstow at 6:00 p. m. They spent 4 hours of the trip eating lunch and watching a movie in Bakersfield...​

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?