What property of dna causes it to migrate tot he positive pole of the electrophoresis apparatus?
a. the positive charge of the dna
b. the negative charge of the dna
c. sugars found in dna
d. nitrogenous bases in dna

Which of the following is a limitation of a clinical trial? a.)amount of random assignments b.)hospital cost c.)number of test tubes d.)amount of peer review

How does the human body lever work?

Which of the following statements about brain development and early childhood is true? the brain of a 5 year old is 60 percent the size of an adult brain the overall size of the brain does not increase dramatically from ages 3-15 by the time a child is 3 years of age, the brain is 25 percent of it's adult size the development that occurs inside the brain ends at the onset of adolescence