25. use the information from the above
question to calculate both phenotypic
ratios and genotypic ratios for the results
of each of the following cross:
tt gg x tt gg

How do you date a sample of rock that you suspect as being one of the earliest on earth

The finches on the galapagos island were similar in form except for variations of their beaks. darwin observed that these variations were useful for: attracting a mate defending territory building nests gathering food

The primary organisms involved in the process bacteria and fungi.