contestada

In allium, interphase lasts about 15 hours, and mitosis takes up 80 minutes. Assuming that
each stage of mitosis takes the same amount of time, how many hours old is a cell that is just
starting anaphase. (Yes, you'll need to do some math here - show your work or explain your
reasoning)

Respuesta :

luisvaschetto

Answer:

15 hours and 40 minutes

Explanation:

The stages of mitosis are prophase, metaphase, anaphase and telophase. Anaphase is the stage of mitosis after metaphase where replicated chromosomes are segregated to opposite poles of the cell. Anaphase is the third stage after prophase and metaphase, which in this case have the same duration (20 minutes each one). In consequence, a cell that is just starting anaphase is 15 hours and 40 minutes old.

Interphase: 15 hours

Prophase: 20 minutes  

Metaphase: 20 minutes

marianaegarciaperedo

Knowing that interphase lasts 15 hours and each stage of mitosis lasts 20 minutes, we could say that a cell that is starting anaphase is 15 hours and 40 minutes old.

-------------------------------------

Available data:

  • The interphase lasts 15 hours
  • Mitosis lasts 80 hours in total
  • Each stage of mitosis takes the same amount of time

Now, from the theoretical framework, we know that the interphase precedes the mitosis event.

We also know that mitosis is complete after four stages:

  • Prophase
  • Metaphase
  • Anaphase
  • Telophase

So if the cell of interest is just starting anaphase, it means that it has already gone through the interphase. Then the cell has gone through the 15 hours that the interphase takes.

If mitosis is complete in 80 minutes, and each of the four stages lasts the same, we just need to divide 80 on 4 to get the amount of time each stage takes.

80 minutes / 4stages = 20 minutes/stage ⇒ Each stage takes 20 minutes

                                                                          to complete.

This cell is just beginning the anaphase, which means it has already gone through prophase and metaphase. Each of them lasted 20 minutes.

So this cell has gone through 15 hours of interphase + 20 minutes of prophase + 20 minutes of metaphase = 15 hours and 40 minutes.

We can say that this cell is 15 hours and 40 minutes old.

-----------------------------------

Related link: https://brainly.com/question/21539852?referrer=searchResults

                     

Otras preguntas