It is a chromosomal abnormality. Hope this helps!
Answer:
Option 2
Explanation:
don't don't hold me to this but I think it's decreased trade among countries has caused whittling world economy because that is a problem and problems are typically a push factor
It really depends, think of it as 2 light bulbs in each parent. if both light bulbs in both parents are switched on that means their genes that they inherited are only able to have brown eyed babies, although if just 1 of the 4 light bulbs are not on it allows the baby to have blue eyes.
If the display case is cubic in shape and one edge is 15 inches then the other two edges will also be 15 inches each and since volume is lengthxwidthx height then the volume will be 15 x15 x 15 = 3375 cubic inches.