Question

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

Explanation:

• A pedigree shows family carriers (genetic disorder carriers in the family), family history (occurrence of genetic disorders in the family), and the risk of genetic disorders in offspring (by analyzing inheritance patterns).
• A karyotype is a visual display of an individual's chromosomes. It can directly show a visual image of a chromosomal defect (e.g., extra or missing chromosomes, chromosomal rearrangements).

Answer:

D. a visual image of a chromosomal defect