How is crossing over different than simply receiving a particular allele from each parent?

In tilman's experiments with diatoms, what was the outcome when the two species competed for silica?

Which vascular tissue is involved in the transportation of starch found in fruit pulp? a. Xylem b. Phloem c. Pith

How does erosion effect the lithosphere

What is produced from the third stage of cellular respiration, the electron transport chain? A. NADH and water B. Water and ATP C. Pyruvate and ATP D. Carbon dioxide and NADH

How can you explain the increased sensation of palpitations and increased heart rate in this patient with hyperthyrodism?

Which of the following statements is true? Parasites benefit their hosts. Parasitism causes both the parasite and host to adapt and evolve. All parasites stay with their host until the host dies.

What do gradualism and punctuated equilibrium have in common? A. They are both explanations of the rate of evolutionary change. B. They are both explanations that were put forth by Darwin. C. They both discredit the theory of evolution. D.

The human immunodeficiency viris (hiv) is a bloodborne pathogen that is spread by

A cell that is undergoing mitosis is examined with a light microscope. an observation that would allow for identification of the cell as an animal cell rather than a plant cell would be

A da capo aria opens with two contrasting sections, A and b. What will the singer do after singing the B section? a. Sing the A section againB. End the ariaC. Repeat the B sectionD. Go to the C section