Question: Where are the chromosomes duplicated?

Explanation: DNA replication (and thus chromosome duplication) occurs during the interphase , the part of the cell cycle in which the cell is not dividing. It is important to know that the interphase is not part of mitosis.

Are chromosomes duplicated in meiosis?

In meiosis I, each chromosome in a cell is replicated to yield duplicated sister chromatides for each member of the homologous chromosomes. … At this stage it is important to remember the remaining chromosomes are comprised of the sister chromatids, which will separate in meiosis II.

Are chromosomes duplicated in mitosis?

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. Because this process is so critical, the steps of mitosis are carefully controlled by certain genes.

Are chromosomes duplicated in G2?

G1 phase (Gap 1) – Cellular contents excluding the chromosomes, are duplicated. … G2 phase (Gap 2) – The Cell “double checks” the duplicated chromosomes for error, making any needed repair.

Why are chromosomes duplicated in meiosis?

Because meiosis creates cells that are destined to become gametes (or reproductive cells), this reduction in chromosome number is critical — without it, the union of two gametes during fertilization would result in offspring with twice the normal number of chromosomes!

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What is a duplicated chromosome called?

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. … The chromosomes are separated by a structure called the mitotic spindle.

How many chromosomes did you inherit from your father?

We inherit a set of 23 chromosomes from our mothers and another set of 23 from our fathers. One of those pairs are the chromosomes that determine the biological sex of a child – girls have an XX pair and boys have an XY pair, with very rare exceptions in certain disorders.

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