What does a replicated chromosome consist of?
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 are mitotic chromosomes made of?
Mitotic chromosomes have four structural/functional domains: centromeres, telomeres, the periphery, and arm chromatin (Figure 1a–d). Each domain has a characteristic protein composition. The centromere and its associated kinetochore together comprise an elaborate structure, with over 120 constituents described to date.
What part of mitosis are chromosomes replicated?
DNA replication (and thus chromosome duplication) occurs during the interphase , the part of the cell cycle in which the cell is not dividing.
What are the parts of mitotic division?
Mitosis is conventionally divided into five stages known as prophase, prometaphase, metaphase, anaphase, and telophase. While mitosis is taking place, there is no cell growth and all of the cellular energy is focused on cell division. During prophase, the replicated pairs of chromosomes condense and compact themselves.
Does a replicated chromosome consists of two sister chromatids?
FEEDBACK: A replicated chromosome consists of two sister chromatids that are held together at the centromere. During S phase, the replicated chromosomes are produced in preparation for mitosis. It is during mitosis that the replicated chromosome is split in two. homologous chromosomes exchange genetic information.
What does a duplicated chromosome consist of quizlet?
A duplicated chromosome consists of two identical structures called chromatids. -Chromatids are held together by a structure called the centromere. Chromatids are the strands of DNA (also called chromatin) that are wound around proteins so that the large amount of DNA can fit inside a cell.
How many chromatids are in each replicated chromosome?
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 phase do chromosomes replicate?
S phase
In the eukaryotic cell cycle, chromosome duplication occurs during “S phase” (the phase of DNA synthesis) and chromosome segregation occurs during “M phase” (the mitosis phase).
How many cells are produced in mitosis?
two identical daughter
Mitosis is a fundamental process for life. During mitosis, a cell duplicates all of its contents, including its chromosomes, and splits to form two identical daughter cells.
What are replicated chromosomes called?
sister chromatids
Before anaphase begins, the replicated chromosomes, called sister chromatids, are aligned at along the equator of the cell on the equatorial plane. The sister chromatids are pairs of identical copies of DNA joined at a point called the centromere.