Are there any evolutionary advantages or disadvantages to having twins?

May 22, 1989 ... ... what percentage of homeless people are addicts. The answers homeless people give to questions about substance abuse can be unreliable. Mar 11, 2021 ... One in every 42 children is born a twin and much has changed over the past 30 years, a report finds. It ise stimated that 33.43 percent of all twin pregnancies within the total population ... The percentage of sets of twins in which both members are ... Sep 20, 2019 ... ... percent of the population) than non-identical twins. Twins have much that's special about them, but one somewhat surprising finding about ... This finding was the first, but very powerful, indication that genetic differences between people are a source of differences in happiness. MZ twins who ... In Australia, twins happen in 1 in every 70 births. This means that 1 in 35 Australians is a twin. The chance of having fraternal twins is higher. Around one ... Nov 5, 2013 ... Fraternal twins, on the other hand—people ... 10 percent of the population at large, and a whopping 80 percent of schizophrenics smoke. Nov 24, 2024 ... The rate of stillbirth is high and is estimated to be around 60 per cent. ... Population Fund (UNFPA) in support of reproductive, adolescent and ... Oct 11, 2011 ... The major exception are the Caribbean Islands, where many people of African descent live — for instance, Haiti had 14 twins per 1,000 births. Aug 18, 2016 ... The twin boom. The proportion of twins in the population has waxed and waned in human history. For the first time we understand why. by Laura ...