Incompletely masculinized male offspring exposed to phthalates in utero may exhibit a smaller penis, less testicular descent, and undescended testicles.

“so for that I have to back up and say um something you know probably know very well but I'll just explain it the genital tract initially is a ridge it's a single Ridge it's the same in males and females it's not sexually dimorphic at the beginning and then under the influence of testosterone in a very specific window called the male programming window in rats its days I think 9 to 12 of gestation so very short window to orient people I think rat mouse gestation is about 21 days or so yeah okay so so so it's for us it'll be early first trimester okay but that comes later so so um at that time if they feed their mother that chemical in her food then her male offspring are born with changes in his genitals or more likely to right and so what they tend to have is a smaller penis um less Descent of the testin is more likely to have unended testicles”