Answer:
option B
Explanation:
there are 22 pair of autosome and 2 pair of sex chromosome
DNA/fingerprints are all unique, therefor it is easy to match a fingerprint to a person thus they use this mechanism in criminal investigations because only one person woul have matching DNA to the prints on the scene, and that is the criminal.
Hope this helps :)
The lymph system creates extra white blood cells.
Answer:
down syndrome
Explanation:
people with down syndrome have an extra chromosome in the twenty-first pair
