If women's bodies have evolved to terminate many pregnancies of fetuses that have chromosomal irregularities or otherwise do not measure up during the first trimester, what does that mean (if anything) for the abortion debate?

https://evolutionmedicine.files.wordpre ... gnancy.pdf
(page 507)

Here is a discussion about its ethical implications (which appears to be from a professor with anti-abortion views) http://www.ncbi.nlm.nih.gov/pmc/article ... 3-0025.pdf