A piece of blood-stained clothing is found in a forest where a woman has been reported missing. The blood type on the cloth is identified as type 0. The
husband reports that he does not know his wife's blood type, although their
children have blood types A and 0 and he has blood type A. Could the blood on
the cloth belong to the wife and mother? Explain your answer.

1. seamount a raised footwall block between normal fault creates this 2. syncline break between rocks where a hanging wall rises relative to a footwall 3. hot spring on rolling hills, this a dip between hills 4. volcanic neck created when a block with hanging walls slips down between normal faults 5. caldera underwater volcano that never reaches above sea level 6. horst natural hot water on earth's surface containing many minerals 7. graben underwater volcano whose top is eroded flat by waves 8. crater less than a mile in diameter; looks like a bowl at the top of a volcano 9. guyot magma that filled the central vent that remains after the volcano has eroded 10. reverse fault over 1 mile in diameter; looks like a bowl over a volcano