Bronchi branch continually into smaller and smaller tubes and eventually end in sacs called
a. trachea
b. motor neurons
c. oblongata
d. alveoli

1.To know if a population is in Hardy-Weinberg Equilibrium scientists have to observe at least two generations. If the allele frequencies are the same for both generations then the population is in Hardy-Weinberg Equilibrium. Example 1b: Recall: the previous generation had allele frequencies of ���� = 0.6 and ���� = 0.4.

2.Running through the fossil record makes it clear that life has changed over time. ... By carefully studying fossils, scientists have been able to link many extinct species with ones that survive today, sometimes indicating that one descended from another.