IB35ACS Study Guide

Because of gene recombination and somatic

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 5- 19 years) o Farming vs. Foraging ▪ Farming : feed 0.5 people per km² with foraging systems, feed 54 people per km² today with our ag practices ▪ Why farm? no general consensus as to why pops made the transition ▪ pop size increase is correlated with farming, which came first? shift for cultural reasons, but then you are stuck “The” demographic transition o 1798 Thomas Malthus o Fertility declines ▪ European provinces declined by 40% ▪ ▪ ● Main method of birth control coitus interruptus: pull- out complicated, multifactorial shirts in values: increasing value of nonag goods & education, survival of children, economic value of women’s time, cost for rearing children o Mortality declines: germ theory of disease, improved personal hygiene, improved nutrition (food storage and transportation), publicly organized and funded biomedical research o Increases in life expectancy ▪ India: 24 to 62 ▪ China 41 to 70 ▪ US Social Security Admin projects life expectancy to be 83 by 2080 o Contraception not new… ▪ Cyrenian coin from Libya ▪ Queen Anne’s Lace seeds o Modern fertility ▪ donor gametes ▪ assisted reproductive technology ● over 1% of all infants born in US conceived using ART Conclusions o Our lineage’s fertility has evolved over the last 5 million years. o Prior to the Neolithic, you could describe Homo sapiens as having average TFR of 4- 8 o There is no modern pop that could serve as one example of what human fertility is like t...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern