Hairpins often form at palindromic sequences in single strands of either rna or dna. however, several key features differentiate the helical structure of an rna and a dna hairpin.

select the statements that describe the helical structure of an rna hairpin. a) the hairpin adopts a right-handed helix with a diameter of 20 å .b) the pentose in the hairpin adopts only the c-3\' endo pucker conformation. c) the hairpin adopts a right-handed helix with a diameter of 26 å .d) the hairpin contains g: c, a: u, and sometimes g: u base pairs. e) the pentose in the hairpin adopts either the c-2\' or the c-3\' endo pucker conformation.

interphase

the period of cell growth when the cell synthesizes new molecules and organelles. the cell is not dividing and it constitutes the majority of the time spent in the cell cycle

prophase

changes occur in the nucleus and cytoplasm. the chromatin condenses to form structures (sister chromatids) visible with a light microscope and the mitotic spindle begins to form, but the nucleus is still in tact

prometaphase

the nuclear envelope fragments and the spindle microtubules attach to the kinetochores of the sister chromatids

metaphase

all the cell's duplicated chromosomes are lined up at an imaginary plane equidistant between the poles of the mitotic spindle

anaphase

begins when sister chromatids separate from each other and ending when a complete set of daughter chromosomes arrives at each of the two poles of the cell

telophase

the daughter nuclei form at the two poles of a cell

cytokinesis

the division of a cytoplasm to form two separate daughter cells. usually occurs during telophase during mitosis. this and mitosis make up to mitotic (m) phase of the cell cycle

her next move would be to use agarose gel electrophoresis to separate the dna molecules of varying length and create a dna fingerprint.