NotAnotherScientist
NotAnotherScientist t1_j22mv94 wrote
Reply to comment by swanqueen109 in TIL that on average women live five years longer than men, and that by age 85 around 67% of the population is female in the US. by Successful-Depth-235
Most of the differences in life expectancy that are due to genetic factors present themselves in the early stages of life (<20 years). So by the time someone is old enough to join a convent or monastery, life expectancy mostly evens out.
For example, look at infant mortality rates: https://pubmed.ncbi.nlm.nih.gov/23151996/#:~:text=Infant%20mortality%20is%20higher%20in,to%20diseases%20and%20premature%20death.
NotAnotherScientist t1_jdmyu32 wrote
Reply to comment by _Dnikeb in TIL, the placenta that forms with a fetus isn't created by the mother. It grows from the fertilized egg and some fetuses actually develop outside the uterus attached to the intestines in the body cavity. by darw1nf1sh
Really cool information. Thanks for sharing!
For those curious, I looked up non-placental mammals and as I was expecting, it's marsupials and the duck-billed platypus among others. What surprised me to learn is that the anteater is also a non-placental, non-marsupial mammal. Now I want to read more on the anteater.