Submarine Mystery Answers of the Week - 9-19-2009

M.E. provided only Mystery Answers instead of questions last Friday. Readers were asked to frame the corresponding questions. Hopefully, this infrequent format challenged some of our most astute readers satisfactorily.

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The theme was twins, of course:
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Answer [approximately] 1):.
1 in 60 African descent
1 in 90 Caucasian descent

1 in 150 Japanese descent

1 in 300 Chinese descent

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Question 1) - What is the expected incidence rate of fraternal twins?

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Explanation: link The rate of dizygotic twinning (commonly known as fraternal twins, but also referred to as non-identical twins or biovular twins) varies greatly by ethnic group, as ratios above attest.

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Answer 2): SSN-701.

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Question 2) - On which U.S. submarine did a set of publicly acclaimed identical twins serve together?

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Explanation: link Crew Members See Double Aboard USS La Jolla - October 2004

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Answer 3): 4th Engineer Battalion and nuclear power school.

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Question 3) - What happened recently with officer twins in the military?

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Explanation: link Twins will graduate as officers - One attended Annapolis, the other West Point - Only the the Annapolis grad, Nick Friedewald, is expected to be deployed on a sub when he finishes nuclear power training. His twin? - The 4th Engineer Battalion of the 555th Engineer Brigade at Fort Carson. - May 23, 2009

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Submarines are always silent and strange.