Darla smoked heavily during the entire 9 months of her pregnancy. her newborn baby will most likely be a. underweight. b. autisticc. hyperactived. hearing impaired

The correct answer is - a. underweight.

Explanation:

Smoking is advised to quit before pregnancy so new born could be risk free of health issue caused by smoking. The major pregnancy risks of the smoking heavily during pregnancy for new born babies are preterm birth, cleft birth defects.

The heavily entire 9 month smoking leads to underweight baby due to various reason including preterm birth. SIDS is also one of the risks of the smoking even after the pregnancy.

Thus, the correct answer is - a. underweight.

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).   so the answer is a.