Wich two of the following statements about the separation of molecules are true? a. separation of protein using "native" or "non-denaturing" gel electrophoresis is on the basis of the net charges b. separation of dna molecules using gel electrophoresis is on the basis of the net charges c. separation of dna molecules using gel electrophoresis is on the basis of sizes d. separation of protein using "native" or "non-denaturing" gel electrophoresis is on the basis of sizes

Which statements are true of a scientific theory but not a hypothesis

Indicate whether the following statements about the biases in the fossil record are true or false. a) inland species are more likely to be preserved than marine species b) organisms with hard body parts are more likely to be preserved than are those composed soft tissues. c) species that existed over a larger area are more likely to be preserved than species existing over a smaller area. d) organisms that lived very long ago are more likely to be found as fossils than organisms that lived relatively recently e) the fossils of larger organisms are more likely to be found than the fossils of smaller organisms

Select the correct answer. tay-sachs disease is caused by a mutation in the hexa gene located on chromosome 15. tay-sachs follows an autosomal recessive pattern of inheritance. with the of the diagram, identify which of the offspring will be an unaffected carrier. a diagram showing the genes of parents who are carriers of tay-sachs disease a. a, b, and c b. b and c c. a and d d. a e. d