A replicated chromosome (or equivalently, a duplicated chromosome) contains two identical chromatids, also called sister chromatids. The difference between a duplicated chromosome and a chromatid, strictly speaking, is that a chromosome contains two chromatids that are joined at a structure called a centromere.
What does each duplicated chromosome have two of?
Because each duplicated chromosome consists of two identical sister chromatids joined at a point called the centromere, these structures now appear as X-shaped bodies when viewed under a microscope. Several DNA binding proteins catalyze the condensation process, including cohesin and condensin.
What does each duplicated chromosome have two of quizlet?
Each duplicated chromosome still has two chromatids. The cytoplasm divides and two new cells form. … The chromatids seperate and move to opposite ends of the cell. Each chromatid is now an individual chromosome.
How are 2 duplicated chromosomes held together?
Centromere. Centromere, structure in a chromosome that holds together the two chromatids (the daughter strands of a replicated chromosome). The centromere is the point of attachment of the kinetochore, a structure to which the microtubules of the mitotic spindle become anchored.
Is the number of DNA molecules in a duplicated chromosome half or double?
Recall that DNA is replicated during the S phase of the cell cycle. Thus during metaphase of mitosis, each chromosome (i.e., each chromatid pair) will contain two molecules of double stranded DNA (one molecule per sister chromatid).
How do you know if a chromosome is duplicated?
The difference between a duplicated chromosome and a chromatid, strictly speaking, is that a chromosome contains two chromatids that are joined at a structure called a centromere. A duplicated chromosome therefore includes two identical strands joined along their length at corresponding lengths of DNA.
What are the two halves of a duplicated chromosome called?
Definition: A chromatid is one of two identical halves of a replicated chromosome .
What is the name for the special region on a duplicated chromosomes where the sister chromatids are most closely attached to each other?
Scientists now appreciate that the centromere is a region of specialized chromatin found within each constricted chromosome that provides the foundation for kinetochore assembly and serves as a site for sister chromatid attachment (Figure 1). Errors in centromere or kinetochore function are catastrophic for cells.
How many chromosomes are in a duplicated chromosome consisting of two sister chromatids?
92 chromosomes, each consisting of two homologous chromatids connected by a centromere C) 92 chromatids, each consisting of two sister chromosomes connected by a kinetochore D) 23 chromosomes, each consisting of a maternal and a paternal chromatid connected by a centromere E) None of the above is correct.
What is a chromosome called in its duplicated state?
A replicated chromosome (or equivalently, a duplicated chromosome) contains two identical chromatids, also called sister chromatids. hope it helps you!