Answer: 47 Chromosomes
Explanation: People with Down syndrome typically have three copies of chromosome 21 in each cell, for a total of 47 chromosomes per cell.
Answer:
Low pressure spins counterclockwise, causing weather systems to move from west to east in the Northern Hemisphere.
This is due to lower air pressure further North America than in the tropics. Since low-pressure systems spin counterclockwise, winds move from the west to the east.
Prevailing weather results from expansive convection currents formed by the temperature differences on the surface of the earth as latitude increases. The Coriolis effect adds the twist.
I got this from a few sites so use this information as you want and be careful <3
Answer:
Because there are tens of thousands of genes in humans and other organisms, DNA contains a tremendous amount of information about the evolutionary history of each organism. ... It determines evolutionary relationships among organisms, and it indicates the time in the past when species started to diverge from one another.
