Do Now Look on the board and write down the name that you choose for our class skeleton. The winner...
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Transcript of Do Now Look on the board and write down the name that you choose for our class skeleton. The winner...
Do Now
Look on the board and write down the name that you choose for our class skeleton. The winner will be announced tomorrow!
Twins!
Do you know more people who are identical twins or fraternal twins?
“Answers”
Identical twins: 3 in every 1000 deliveries
Fraternal twins: Depends on the mother! (Fathers have no effect) 6 in every 1000 births in Japan 14 in every 1000 births in Africa More common for older mothers (rates
double for women 35+!)
FERTILIZATION
Fertilization & Twins
http://www.youtube.com/watch?v=-e5ODsf_TEk
Youtube!
Take notes http://www.youtube.com/watch?v=BFrV
mDgh4v4
Twins
http://www.youtube.com/watch?v=WQNtXCmf-T8 How it works
http://www.youtube.com/watch?v=oWH4UvMKJPA 12 year old eggs?
Fertilization Worksheet
Worksheet FYI.. Due as a PACKET on Monday