Question

biology nord ic qtr b continuous learning center - credit bearing (tutor)
chromosomal changes
which of these precautions should be taken to reduce the risk of chromosome mutations?
refuse any x - ray
procedures, regardless
of the reason for needing
the x - ray
have routine x - rays
taken every week to
make sure that your body
is healthy
no precautions can
reduce the risk of
chromosome mutations
wear a lead protective
shield when having teeth
x - rays

Explanation:

• Refuse any X - ray procedures, regardless of the reason for needing the X - ray: This is an extreme and not practical approach. X - rays are important diagnostic tools in many medical situations, and completely refusing them can lead to misdiagnosis of serious conditions.
• Have routine X - rays taken every week to make sure that your body is healthy: Frequent X - rays expose the body to unnecessary radiation. Radiation from X - rays can increase the risk of chromosome mutations (as it is a mutagenic agent), so having them too often is not a precaution but rather a risk - increasing behavior.
• No precautions can reduce the risk of chromosome mutations: This is incorrect. There are measures that can be taken to reduce the risk of chromosome mutations. For example, reducing exposure to mutagens (such as certain chemicals, radiation).
• Wear a lead protective shield when having teeth X - rays: Lead shields protect non - target areas (such as the thyroid, chest etc.) from radiation during X - ray procedures. Since X - rays are a type of ionizing radiation that can cause chromosome mutations (by damaging DNA), shielding non - relevant body parts reduces the overall radiation exposure to the body, thus reducing the risk of chromosome mutations.

Answer:

wear a lead protective shield when having teeth X - rays