If two DNA samples showed an identical pattern and thickness of bands produced by gel electrophoresis, the samples contained

a. the same amount of DNA.

c. the same DNA molecules.

b. fragments of the same size.

d. all of the above

How do the chromosomes in a sex cell differ from those in a body cell

What effect do you expect the structural differences between prokaryotes and eukaryotes to have on their functions?

A complex of interconnected food chains in an ecosystem is called a/an A. trophic stack. B. food web. C. ecosystem. D. ecological pyramid.

What hypothesis did the researchers test in this study? A. Reproductive isolation increases with geographic distance between dusky salamander populations. B. Dusky salamanders are in the process of speciation. C.

How does food web complexity affect the biodiversity of an ecosystem?

During the digestion of foods, large molecules are broken down into smaller molecules

Identify each statement as a hypothesis, theory, or law. Higher air pressure causes fuel to burn at a faster rate.

Which sequence represents the correct levels of organization for multicellular organisms

Which statement best compares and contrasts lipids and carbohydrates? Both are used for tissues, but only carbohydrates are used for tissue growth. Both are used for energy storage, but only carbohydrates are used for long-term energy storage.

What is another name for lane d in the diagram