Question

7.3 errors in meiosis
question 13 2 pts
which of the following are true of down’s syndrome?
○ it is more likely to occur when teenagers have children
○ is results from the loss of a chromosome
○ all of the choices are accurate.
○ it is more likely to occur when older women have children

Explanation:

1. Analyze each option:

• Option 1: Down's syndrome is more likely with older mothers, not teenagers. So this is false.
• Option 2: Down's syndrome is caused by an extra chromosome (trisomy 21), not loss. So this is false.
• Option 3: Since the first two are false, this is false.
• Option 4: The risk of Down's syndrome increases with maternal age, so it's more likely in older women having children. This is true.

Answer:

D. it is more likely to occur when older women have children (assuming the options are labeled A, B, C, D with the last option as D; if labels differ, adjust, but based on the order, the correct one is the last option: "it is more likely to occur when older women have children")