Which of the following options is an accurate description of the effects of teratogens?

Question

BlackTom AI · Accepted Answer

Here is a close examination of each option regarding the effects of teratogens.
Option A: 'Effects on the developing embryo or fetus depend on the timing of exposure.' This statement aligns with well-established teratology: the same agent can produce different outcomes depending on the gestational stage at which exposure occurs, since different tissues form at different times. This makes timing a critical factor in teratogenic risk.
Option B: 'A single teratogen will cause the same effects whenever the embryo or fetus is exposed to it.' This is inaccurate. Teratogenic effects are highly dependent on timing, dose, and genetic susceptibility. The same agent can produce different anomalies or none at all if exposure occurs at a different developmental window, so this option overgeneralizes.
Option C: 'A variety of defects can result from a single teratogen because of the interaction between the teratogen and the mother’s genotype.' While maternal genotype and genetic factors can influence susceptibility, this statement is overstated as the sole mechanism. Teratogens can cause a range of outcomes due to timing, dose, and fetal genetics too, and it implies a specific interaction with maternal genotype as the primary driver, which is not universally accurate.
Option D: 'Father exposure effects result through the father’s interaction with the child in the postnatal environment.' This option incorrectly shifts focus to paternal exposure and postnatal environment. Teratogenic risk is typically discussed in terms of in utero exposure to the developing embryo/fetus, not paternal exposure influencing postnatal interactions, making this statement misleading.
In summary, option A correctly captures the core principle that timing of exposure critically shapes teratogenic effects, whereas options B, C, and D misrepresent the variability, mechanisms, or timing considerations involved in teratology.

Which of the following options is an accurate description of the effects of teratogens?Single choice

Similar Questions

During prenancy, alcohol would be considered a:

When are teratogens most harmful during pregnancy? Choose the best advice you should give based on what you have learned in this course.

Question at position 7 Reproductive toxins only affect pregnant women. TrueFalse

Question at position 3 A newly pregnant woman is warned by a doctor about teratogens. She does not know what these are and wants to look them up in a book, but is unsure where to look. You tell her that the teratogens named in your text includedopaminetestosteronesugaralcoholserotonin

The embryonic period is the most sensitive time for teratogen exposure.

True or false? If a teratogen is introduced after a particular organ has formed, it may not have much of an effect on the structure of that particular organ.

Children whose mothers drank alcohol during pregnancy often have a specific set of facial features, may have heart defects, and brain damage. Children whose mothers took thalidomide for morning sickness may have malformed limbs. These examples illustrate

What is a teratogen?

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler