<span>The male with down syndrome would have an extra 21 chromosome.
Hope this helps!!</span>
Answer:
• Valve between the left atrium and left ventrical.
Explanation:
The first part of the heartbeat occurs through the sound of the mitral and tricuspid valves closing. These valves are located between the right upper heart chamber (right atrium) and right lower heart chamber (right ventricle).
Lol of course, just wait until you know for sure who you want to be committed to and see how well that works out for the two of you, don't worry, it all takes time! :) Have a great day!