The presence of a given number of chromosomes in a cell that differs from the normal number of chromosomes defined for an organism is termed as aneuploidy.
There can be either an extra chromosome present or a chromosome that can be missing thus leading to either an increase or decrease in the number of total chromosomes in the organism.
If there is a loss of a single chromosome in the cell then this type of aneuploidy is termed as monosomy.
In a normal individual if two copies of one chromosome are present then monosomy would result only in the presence of a single chromosome.
This type of condition can lead to different genetic defect and disorders , one such example is turner syndrome.
Therefore, in the spontaneously aborted embryo, the presence of only one chromosome number two is a type of monosomy.
The acid is becoming less acidic. Similarly, when an alkali is diluted with water the concentration of OH - ions decreases. This causes the pH of the alkali to fall towards 7, making the solution less alkaline as more water is added.
