You run into your old friend, Aaron, who tells you that (strange as it sounds) he and his identical twin brother Jared got married to identical twin sisters! He says it’s going to be really exciting, because both couples just had baby girls, so his and Jared’s kids will also be identical twins!
Think about how you would respond to Aaron.
What do you think are the chances that these babies are identical twins (e.g., 100% chance, 50% chance, 25% chance, etc.)?
Why?
How would you explain your opinions to Aaron?
Please try to write at least 3 sentences to share the approximate percent chance you think the babies are twins and your reasoning.
If you are uncertain, that's just fine! No research is necessary now. This is just a chance to explore your existing ideas!
Also note that, while this scenario appears to revolve around a set of cis-gender, heterosexual couples, we recognize this is by no means the only model for a family! :)
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