Nursing Practice II (NP2) Preboard Practice Exam

The choice that states determining the sex of the fetus is not a known effect of teratogens during pregnancy is correct because teratogens are substances that can cause developmental abnormalities in a fetus, leading to negative outcomes such as increased risks of birth defects and impacts on fetal organ development. Teratogenic effects are primarily linked to physical and functional alterations in fetal development rather than influencing genetic factors such as the determination of sex, which is established at conception and depends on the chromosomal contribution from the parents (XX for female and XY for male).

Additionally, the timing of exposure to teratogens is critical because different stages of fetal development have varying vulnerabilities to teratogenic influences. For instance, exposure during the first trimester may lead to more severe malformations compared to later stages. Understanding these effects is crucial for minimizing risks to fetal health during pregnancy.