#Question id: 11162
#Unit 9. Diversity of Life Forms
Which statement represents the best explanation for the observation that the nuclear DNA of wolves and domestic dogs has a very high degree of homology?
#Question id: 19687
#Unit 13. Methods in Biology
#Question id: 2894
#Unit 2. Cellular Organization
Which of the following statements is INCORRECT regarding the assembly of DNA into higher-order chromatin structure?
I. Histone H1 is not part of the histone octamer, but binds to linker DNA and is responsible for higher-order chromatin structure.
II. The 30 nm fibers of a chromosome are attached to a/an RNA-protein scaffold that holds the fibers in large loops.
III. It is not possible for linear DNA to be supercoiled. Only circular DNA, which has no ends, can have regions of supercoiling.
IV. Core histones lacking their amino-terminal tails are capable of forming 30-nm fibers as they help to stabilize the 30-nm fiber in internucleosomal interactions.
#Question id: 28255
#Unit 5. Developmental Biology
Which of the following structure of egg homologous to the acrosomal vesicle of the sperm?
#Question id: 10406
#Unit 6. System Physiology – Plant