C - 4
Possible gametes: AV, Av, aV, av
If you didn't know already, trisomy 21 is also known as Down Syndrome. It is caused by error in the cell division which is called nondisjunction. It leaves a sperm or egg cell with an extra copy of chromosome 21 before or after conception.
Most coelomates possess a "A. Circulatory system" because the main feature of these animals is that they posses a digestive tract, which requires a certain amount of circulation.
Answer:
The main difference between bryophytes and tracheophytes is that bryophytes are nonvascular plants, whereas tracheophytes are vascular. Mosses, liverworts, and hornworts are examples of bryophytes, whereas ferns, gymnosperms, and angiosperms are examples of tracheophytes
<u>OAmalOHopeO</u>
I think the answer is true, I hope this helps friend.
