Question

chromosomes
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pedigrees and karyotypes provide the means for individuals to identify their risks of genetic disorders. what can be
observed on a karyotype but not on a pedigree?
family carriers of a genetic disorder
family history of a genetic disorder
risk of a genetic disorder in offspring
a visual image of a chromosomal defect
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Explanation:

A pedigree shows family - related information such as family carriers of a genetic disorder (by showing which family members carry the gene), family history of a genetic disorder (by showing affected ancestors), and risk of a genetic disorder in offspring (by analyzing the pattern of inheritance). A karyotype is a visual display of an individual's chromosomes. It can directly show a visual image of a chromosomal defect (like an extra chromosome in Down syndrome, which is trisomy 21).

Answer:

a visual image of a chromosomal defect