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.
A hydrogen bond connects the nitrogenous bases of the nucleotides together!
Cellulose. Our bodies as humans lack enzymes to break the cellulose down.
Answer:
The Answer would be AATGCG.
Explanation: The reason is because A pairs with T and C pairs with G.
Answer:
The answer is a. they are much like empty rooms.
Explanation:
Cells are pretty much the opposite of empty rooms. There are many organelles and processes happening in them, so there's no space for empty rooms. Even when there are spaces, which anyway would be full of liquid, these spaces have a purpose.
