Astudent can study a karyotype to learn about the
a - molecular structure of a chromosome.
b - genes that are present in a particular strand of dna
c - medical history of an individual.
d - chromosomes present in a somatic cell.
e - eye and hair color of an organisms

chromosomes present in a somatic cell

Explanation: karyotyping is the study of the number of chromosomes that are present in the cells of an organism. For checking genetic abnormalities karyotyping tests perform. In which chromosomes number is determined. Chromosome count checked and person gender can also be checked in forensic cases like by the male Y chromosome, male gender can be determined.

layer 3 is younger than layer 6.