what are the student's observations and inferences before he starts his investigation?

Based on anatomical similarities, to which modern animal is dr. digger’s creature most closely related?

What are some natural processes that represent physical and chemical changes?

In a population that is in hardy-weinberg equilibrium, there are two possible alleles for a certain gene, a and a. if the frequency of allele a is 0.4, what fraction of the population is heterozygous? a. 0.40 b. 0.60 c. 0.16 d. 0.48