A karyotype of a baby born with abnormalities indicates that the child has 47 chromosomes. What conclusion could you draw?
A. The developing embryo was exposed to a teratogen between weeks 3 and 4 after fertilization.
B. The baby has Turner syndrome.
C. The mother was probably over the age of 35 when she conceived.
D. The zygote was exposed to a mutagen.
E. Nondisjunction during meiosis affected either the egg or sperm.
Answer: E
Anatomy & Physiology
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