Answer:
1) To form a multicellular organism, a zygote must divide into 16 cells which produces ball structure called a morula. After that, morula is converted into a structure called blastula.
2) Adult stem cells are responsible for the maintenance of tissues and repair the damage tissues in the body. It is also called somatic stem tissue. It increase in number through cell division.
Drilling is the result of fertilizer not working.
Answer:
Codon
Explanation:
mRNA bases are grouped into sets of three, called codons.
