A couple wants to have two children who are genetically identical. Short of having identical twins engineered, which of the following statements best describes the number of offsprings they should have to allow this?
a) 23,000
b) 23^2
c) 2 ^ 23000
d) At least a billion

Question

A couple wants to have two children who are genetically identical. Short of having identical twins engineered, which of the following statements best describes the number of offsprings they should have to allow this?
a) 23,000  
b) 23^2  
c) 2 ^ 23000
d) At least a billion

anonymous · Answer

2^23 for chance of getting same chromosome 
and we also need to consider crossing over so ans will At least a billion

anonymous · Answer

and by the time they got a billion children, there should be two identical twins under them - the chance for that so happen is a lot higher.