Which among the following statement is correct ?

The correct answer is Option (4) – All of these.

In human beings and in Drosophila the males have one X and one Y chromosome, whereas females have a pair of X-chromosomes besides autosomes.

Klinefelter’s Syndrome is a genetic disorder caused due to the presence of an additional copy of X chromosome resulting into a karyotype of 47, XXY.

Incase of grasshopper males have only one X-chromosome besides the autosomes, whereas females have a pair of X-chromosomes .