Answer:
Humans have 23 pairs of chromosomes--22 pairs of numbered chromosomes, called autosomes, and one pair of sex chromosomes, X and Y. Each parent contributes one chromosome to each pair so that offspring get half of their chromosomes from their mother and half from their father.
Explanation:
(Sorry, I'm not sure)
Answer:
An expirement must have a variable! :) hope this help, have a good day!!
Explanation:
A it is 1 billion because I looked it up
Depend if you are more creative or more a solver(good in math).