Based on the data in Figure 1, which of the following is most likely the primary cause of the pattern of frequency of trisomy 21 births in the selected maternal age-groups? A) At older maternal ages, there is an increase in the number of errors during mitosis, which leads to an increase in nondisjunction during egg production.
B The incidence of nondisjunction errors in meiosis during sperm production is positively correlated with increasing maternal age.
At older maternal ages, the incidence of errors in meiosis during egg production increases, which leads to an increase in nondisjunction.
DErrors in meiosis leading to nondisjunction are more likely to occur during meiosis I than during meiosis II