Why is it important to cut DNA fragments with a restriction enzyme before you run a get gel electrophoresis

Earths inner core is __ A hot and solid B hot and liquid C cool and solid D cool and liquid?

Understanding the "why?" Select one: a. The etic b. The Westermarck effect c. Incest d. Taboo e. Cultural universal

What type of reasoning was used in the development of evolutionary theory?

Marvin is suffering from the early stages of alzheimer's disease. which component of his working memory is most likely to be affected? a. all of these are equally affected b. the phonological loop c. the central executive d.

Within a particular population, darkly colored rats are more likely to survive than more lightly colored individuals. This situation is likely to result in a. directional selection. b. stabilizing selection. c. disruptive selection. d.

Which of these is an example of an endoparasitic relationship? O A. A tapeworm living in an animal's intestine O B. A rabbit eating lettuce in a farmer's garden O C. A tick living in an animal's fur coat O D. A snake eating a mouse in a cornfield

Why is the presence of organic material in the soil important? A) It wards away plant eating organisms. B) It increases plant growth. C) It increases sunlight absorption. D) It increases water absorption.

Which derived characteristic is shared by at least four organisms? Large brain Lungs Mammary glands Placenta

Question 2 For an object to remain at rest, which of the following must be true? A. The forces on it are balanced B. There is no friction C. Gravity doesn't act on it D. The object has no mass

Identify another invertebrate chordate other than hagfish.