Explanation:
In the majority of cases, the extra copy of chromosome 21 comes from the mother in the egg.
In a small percentage (less than 5%) of cases, the extra copy of chromosome 21 comes from the father through the sperm.
In the remaining cases, the error occurs after fertilization, as the embryo grows.
B, because that is in its chromosomes and dna, the others they get or figure out how to do it
Answer:
B
Explanation:
as it clearly shows on the graph
Answer:
1) A
2) Could be A, B, or D
Explanation:
1) Prokaryote is a single celled organism that has no distinct nucleus, membrane - bound organelles, and specialized organelles (such as the mitochondria).
This definition would only match A) a bacteria cell because all the other cells are called Eukaryotas (which are more complex and have membrane - bound organelles).
2) The answer could be A because Prokaryotic cells lack membrane bound organelles
The answer could be B because the diagram has labeled the cell membrane as "plasma membrane"
The answer could NOT be C because Prokaryotic cells do not have nucleus's, but have free floating DNA.
The answer could be D because it is the only image that has a flagellum (which helps the cell move)
I am sorry I couldn't answer this question completely, but I think that this question has flaws.
Hope this helps! Let me know if you have any other questions!
