Triple X Syndrome is seen in females who inherit 3 copies of chromosome X. Which of the following explains the mechanism of inheritance for this type of chromosomal abnormality? Triple X syndrome. A series of 22 chromosomes are displayed, numbered 1 to 2. There are also 3 chromosomes labeled x.

Errors in crossing-over do not allow for chromosomal separation in anaphase.
Errors in DNA replication do not allow for sister chromatid segregation in metaphase.
Errors in microtubule attachment do not allow for chromosomal separation in anaphase.
Errors in kinetochore attachment do not allow for sister chromatid segregation in metaphase.

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.