B) Euploidy

Euploidy refers to the condition in which an individual has the normal number of chromosomes. In humans, the normal number of chromosomes is 46, with 23 pairs. Each pair consists of two homologous chromosomes, one inherited from each parent. However, there are certain chromosomal abnormalities that can occur, such as aneuploidy.

Aneuploidy is a condition in which there is an abnormal number of chromosomes. It can result from the loss or gain of one or more chromosomes during cell division. Examples of aneuploidy include trisomy (an extra copy of a chromosome) and monosomy (a missing copy of a chromosome).

In the given question, male XXY and female XXXX are mentioned. These conditions are not examples of aneuploidy but rather examples of euploidy.

- Male XXY (also known as Klinefelter syndrome):
- In this condition, a male individual has an extra X chromosome, resulting in a total of 47 chromosomes.
- Instead of the normal XY sex chromosomes, individuals with Klinefelter syndrome have XXY sex chromosomes.
- This abnormality occurs due to a random error during cell division in either the egg or sperm.
- The presence of the extra X chromosome can lead to developmental and physical differences, such as infertility, reduced testosterone levels, and breast enlargement.

- Female XXXX (also known as Tetrasomy X):
- In this condition, a female individual has an extra X chromosome, resulting in a total of 48 chromosomes.
- Instead of the normal XX sex chromosomes, individuals with Tetrasomy X have XXXX sex chromosomes.
- This condition also occurs due to a random error during cell division in either the egg or sperm.
- The presence of the extra X chromosome can lead to developmental and physical differences, such as intellectual disability, delayed growth, and delayed puberty.

Therefore, the correct answer to the given question is option 'B' - Euploidy, as male XXY and female XXXX are examples of euploidy rather than aneuploidy.

Yaa...it's euploidy....as it contains 1 or more complete sets...