Answer: They are called Telomeres.
Explanation:
Telomeres is a region of repetitive nucleotide sequence present at each end of chromosomes that protect the internal regions of the chromosome, they are cap down in a small amount t in every DNA replication.
Telomeres are found in many eukaryotic species ranging from human beings to unicellular protists.
Law, if you notice when reading about the laws of physics it is stated as a fact and has been accepted as the truth.
For example : Newton's first law of physics
"An object in motion tends to stay in motion until an object of an opposite force and direction acts upon it."
hope this helps have a nice day
Additional copies of a gene ON A CHROMOSOME causes cellular problems. The number of chromosomes is fixed for a particular organism. For example, humans have 46 chromosomes or 23 pairs of chromosomes. Each chromosome has segment of the DNA known as genes and is the characteristic of that chromosome. Any alteration such as addition or removal of genes causes cellular problems that lead to changes in phenotypic expressions.
Answer:
The primary function of the centromere is to provide the foundation for assembly of the kinetochore, which is a protein complex essential to proper chromosomal segregation during mitosis. In electron micrographs of mitotic chromosomes, kinetochores appear as platelike structures composed of several layers