Two identical sets of chromosomes are produced.
Chromosome replication occurs before both mitosis and meiosis. During the S phase of the cell cycle, DNA is replicated in preparation for cell division. In mitosis, replicated chromosomes are separated into two identical daughter cells, while in meiosis, replicated chromosomes are separated twice to produce haploid gametes.
Interphase is when DNA replication occurs. :)
Deletion
An original chromosome is called a homologous chromosome, and its copy is called a sister chromatid. Homologous chromosomes have the same genes in the same order but may have different alleles, while sister chromatids are identical copies produced during DNA replication.
Between mitosis I and mitosis II, DNA replication does not occur. This absence of DNA replication means that the chromosomes, which have already been duplicated during the S phase prior to mitosis I, do not replicate again. As a result, when the cells divide during mitosis II, they separate the sister chromatids, leading to a reduction in chromosome number, effectively halving it from the original diploid state to haploid.
A duplicated chromosome is a chromosome that has an exact copy of itself attached to it. This duplication occurs during the cell replication process and can lead to genetic abnormalities if not properly regulated. It can result in conditions like Down syndrome or cancers.
Interphase is when DNA replication occurs. :)
One round of chromosome replication occurs in the cell during the S phase of the cell cycle. This results in each chromosome being duplicated, producing two identical DNA molecules called sister chromatids that are connected at the centromere.
Chromosome replication occurs before both mitosis and meiosis. During the S phase of the cell cycle, DNA is replicated in preparation for cell division. In mitosis, replicated chromosomes are separated into two identical daughter cells, while in meiosis, replicated chromosomes are separated twice to produce haploid gametes.
Interphase is when DNA replication occurs. :)
DNA replication takes place in the chromosome which is located in the nucleus of a cell.
Chromosome replication occurs during the S phase of the cell cycle. This is when DNA is synthesized to ensure that each daughter cell receives an identical copy of the genetic material during cell division.
Deletion
No. It is due to a third chromosome (21) instead of just the normal two.
After replication, each chromosome harbors two sister chromatids, which are identical copies of the original chromosome. The sister chromatids are held together at the centromere and will later separate during cell division.
An original chromosome is called a homologous chromosome, and its copy is called a sister chromatid. Homologous chromosomes have the same genes in the same order but may have different alleles, while sister chromatids are identical copies produced during DNA replication.
The two identical strands of a chromosome are called chromatids. DNA replication occurs in the interphase stage of the cell cycle.