Blood separates in 2 layers. What does the lower layer consist of?

Natural selection states that individuals a) with adaptive traits are more likely to survive. b) on the bottom level of a hierarchy have the greatest reproductive success. c) demonstrating altruistic behavior are the ones with the most mutations.

What class of barrier to gene flow would we be observing if we noted that the offspring of a lion and a tiger (two different species) are awkward, gangly beasts that have poor survival in the wild? a. Premating barrier b. Geographic isolation c.

Which island has the greatest number of unique mammal species?

Mitochondria store the energy released when they burn glucose as

If a plant develops a toxin, how might an herbivore evolve in response?

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

A well supported testable explanation of phenomena that have occurred in the natural world is called

Why is it that traditionally woman in minorities have been underrepresented in the sciences? How does this change in your generation?