A trait unique to embryonic stem cells that makes them useful for generating knockout animals is that they
A) are totipotent.
B) can be grown in culture.
C) have been isolated from mice.
D) are extremely well characterized at the molecular level.
A) are totipotent.
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The major focus of the clinical microbiologist is to rapidly isolate and identify microorganisms from clinical specimens.
Answer the following statement true (T) or false (F)
The famous “bell-shaped curve” that usually results
when test scores are plotted against number of students is an example of what type of selection? a. disruptive b. stabilizing c. divergent d. variable e. directional
A fundamental property of DNA's nitrogenous bases that is necessary for the double-stranded nature of its structure is ________
Fill in the blank(s) with correct word
Before the development of photosynthesis and as ancient cells became crowded, there was probably a major competition for:
A) enzymes. B) water. C) oxygen gas. D) organic molecules.