Blog

A somatic cell from a corn plant normally contains 20 chromosomes.  How many sister chromatids would that cell contain during G2 of the cell cycle?

Embryonic cell cycles allow the rapid division of cells in the early embryo.  These mitotic cell cycles are much shorter in length than the mitotic cell cycles of cells in a mature organism.  In the embryonic cell cycles, mitosis takes approximately the same amount of time as it does in the cell cycles of mature cells.  What do you think is a result of the embryonic cycle?

Occasionally, chromosomes fail to separate during meiosis, leading to daughter cells that have an abnormal number of chromosomes. This phenomenon is called

You are studying cell cycle progression in an early frog embryo. If you were to inject a protein synthesis inhibitor into a cell during S phase, where do you predict that the cells would arrest?

You and a friend simultaneously roll a six-sided die and flip a two-sided coin. What is the probability that the die lands on 4 AND the coin lands on heads?

You are studying cell cycle progression in an early frog embryo. If you were to inject a protein synthesis inhibitor into a cell during S phase, where do you predict that the cells would arrest?

What changes would you make to the following statement in order to comply with Chargaff’s rules: “Chargaff found that for DNA the amount of adenine equals the amount of uracil, and the amount of cytosine equals the amount of guanine, or A = U and G = C.”

What is the portion of the cell cycle during which the chromosomes are invisible under the light microscope because they are not yet condensed?

This is the stage of mitosis characterized by the alignment of the chromosomes in a ring along the inner circumference of the cell:

If a cell was capable of bypassing metaphase and going directly from prometaphase to anaphase, what is the most likely consequence of this?