Why would a policy of allowing only one child per family lead to reduction in the population

What is the chance of two parents with blood types ab and o producing an offspring with blood type o a.0% b.25% c.75% d.50%

Imagine that a mouse has white fur because of a mutation in its dna. which of the following conclusions can be drawn

How did the miller-urey experiment impact the way scientists think about the origins of life? use what you know about the miller-urey experiments to discuss the factors needed for life to arise, and speculate on whether life could arise on another planet.