If the last pair reflects whether the organism is a male or female, which would the organism be?

Complete question:

There is a karyotype in this question, which is missing. You will find it in the attached files.

The individual is a male.

Explanation:

In mammals, sex is determined by a pair of sexual chromosomes. Sexual chromosomes in humans and other mammals are X and Y. The females are represented by the combination of two X chromosomes, while males are represented by the combination of an X chromosome with a Y chromosome. This is, females are XX, and males are XY. When looking at the sexual pair of chromosomes in a karyotype, you can figure out which is the individual´s gender by comparing their sizes. The X chromosome is much bigger and longer than the Y chromosome.

In the shown karyotype, the last pair represents the sexual chromosomes. You can see that one of them (the one on the left) is long and express a sort of J shape, while the other chromosome (on the right) is very short and small. According to what we previously mentioned, the X chromosome is the long one on the left, and the Y chromosome is the short one on the right. This is a male individual.