in addition to revealing chromosome abnormalities, what other information about an individual would a karyotype show?

In addition to revealing chromosomal abnormalities karyotype gives information about the gender of an individual.

Explanation:

A karyotype is the complete information about the chromosomes of an individual, the size, number and type of chromosomes. Analysis of karyotype of an individual gives information about chromosomal abnormalities and genetic disorders if any, in that individual. It is not the only information karyptype gives.

It also gives an idea about the sex of the individual. The sex chromosome of females is homozygous and that of males is heterozygous. Sex chromosome of a female can not be homozygous or heterozygous. Rather, a female can be heterozygous or homozygous for a given allele.