Which nucleotide bases are purines?

a. adenine & guanine

b. adenine & thymine

c. guanine & cytosine

d. cytosine& thymine

Which statements are true concerning linked genes?

Why is the inside of a frogs stomach folded?

2 ways genome mapping is used today

Which term describes an organism that has identical alleles for a trait?

Which of the following best describes succession? A. The changes in species composition in a community over time as species colonize and area. B. The evolution of species through natural selection to becomes different species over time. C.

In the lithification process, compaction is followed by A. cementation B. transformation C. evaporation D. bathification

Which route represents the path taken by the European explorer Christopher Columbus? A) 1 B) 2 C) 3 D) 4

Which gas is the most abundant of the trace gases? A. nitrogen B. oxygen C. argon D. carbon dioxide

Describe the central dogma of molecular biology, briefly describe the processes of transcription and translation.

magine that the animal body produced sperm and eggs with mitosis instead of meiosis. What chromosome number would the autosomes of the third generation have if the first generation had four chromosomes