You are observing a sample of cells in the lab to determine why they did not divide properly. You notice that the chromosomes are lined up in the middle of the cell, and the spindle fibers have extended towards them, but have not attached. What could be damaged?

The kinetochore of the chromosomes

Explanation:

What could be damaged that is hindering the spindle fibers from attaching to the chromosomes are the kinetochores of the chromosomes.

At the metaphase stage of the cell division, the chromosomes align at the equator of the cell and the spindle fibers engage each chromosome at a region known as the kinetochore.

The kinetochore is made up of complex proteins and lies around the centromere region of the chromosome. The microtubules of the spindle fibers attach to this region during the metaphase stage.

If the kinetochore is damaged, it means the spindle fiber will not be able to attach to the chromosome.

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.

you know that this symptom is misleading and quite often is related to: heart attack

a heart attack is a condition that occurs when the blood flow that transports oxygen to the heart muscle is damaged or cut off completely. the coronary arteries that supply the heart muscle with blood flow can be blocked by the accumulation of plaque. also, when the plaque within the heart artery breaks, it creates blood clot that can also hinder the blood flow. men that are over 45years of age and women that are over 55years of age are at risk of having a heart attack. the symptoms of a heart attack include chest discomfort, chest pain, coughing, and shortness of breath.