The diploid number of chromosome for a karyotype containing 47 chromosomes will be 23 XYX8.
Explanation:
In Trisomy 8 syndromes the individual has three copies of number 8 chromosome.
The karyotype is 23 XYX8.
Usually the normal organism has 2 number of eighth chromosome.
The trisomy occurs because of non disjunction in meiosis in the germ cells.