Chromosomes are made of a single piece of DNA that is highly organized. The replicated chromosomes have an X shape and are called sister chromatids. The sister chromatids are pairs of identical copies of DNA joined at a point called the centromere. Then, a structure called the mitotic spindle begins to form.
What 2 structures make up a replicated chromosome?
Feel free to ask more questions. The two structures make up a single replicated chromosome is sister chromatids. The term ‘sister chromatid’ only applies when the identical copies are closely associated with one another and held together by a centromere.
What are the two parts of cell division?
There are two types of cell division: mitosis and meiosis. Most of the time when people refer to “cell division,” they mean mitosis, the process of making new body cells.
What are the two halves of a duplicated chromosome called?
Definition: A chromatid is one of two identical halves of a replicated chromosome .
Can a chromatid be a chromosome?
Chromatids may be sister or non-sister chromatids. … Once sister chromatids have separated (during the anaphase of mitosis or the anaphase II of meiosis during sexual reproduction), they are again called chromosomes, each having the same genetic mass as one of the individual chromatids that made up its parent.