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What happens to homologous chromosomes during prophase 1 of meiosis which does not occur during prophase of mitosis?
During prophase I of meiosis, homologous chromosomes pair up and undergo crossing over, where segments of DNA are exchanged between them. This does not occur during prophase of mitosis, where homologous chromosomes do not pair up or undergo crossing over.
How many chromosomes and chromatids are present in each stage of mitosis?
During mitosis, each cell has 46 chromosomes and 92 chromatids.
During Mitosis the cell is performing its special job?
No, the cell performs its special job during inter phase. During mitosis, the membrane around the cell's nucleus dissolves and the chromatids of each chromosome are separated and pulled to each end of the cell. As the nuclear membrane re-forms around each set of chromosomes, the cytoplasm of the parent cell begins to divide to form two daughter cells.www.answers.com/topic/mitosis
Explain why DNA replication must occur before mitosis starts?
DNA replication must occur before mitosis starts to ensure that each daughter cell receives a complete and identical copy of the genetic information. If DNA replication did not occur before mitosis, the daughter cells would have only half of the necessary genetic material, leading to genetic abnormalities and potentially cell death.
How many rounds of chromosome replication occur in the cell?
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.
During each mile you drive up to events you need to interpret can occur?
For each mile driven, there can be up to 200 events that you have to see and decide what to do.
What happens to homologous chromosomes during prophase 1 of meiosis which does not occur during prophase of mitosis?
During prophase I of meiosis, homologous chromosomes pair up and undergo crossing over, where segments of DNA are exchanged between them. This does not occur during prophase of mitosis, where homologous chromosomes do not pair up or undergo crossing over.
How many times does transcription occur during each round of the cell cycle?
Transcription occurs multiple times during each round of the cell cycle, particularly during the interphase stages (G1, S, and G2). In these phases, genes are transcribed as needed for cell growth, DNA replication, and preparation for mitosis. During mitosis (M phase), transcription is largely halted as the cell focuses on chromosome segregation. Overall, the frequency of transcription events varies depending on the specific needs of the cell at different points in the cycle.
What happens in the s phase that is essential for mitosis to occur?
In the S phase of the cell cycle, DNA replication takes place, resulting in the synthesis of identical copies of each chromosome. This is essential for mitosis to occur because each daughter cell needs to receive a complete set of chromosomes. Without the S phase, there would not be enough genetic material to distribute to the daughter cells during mitosis.
How many chromosomes and chromatids are present in each stage of mitosis?
During mitosis, each cell has 46 chromosomes and 92 chromatids.
What event must occur outside the nucleus before mitosis can begin?
Before mitosis can happen, the chromosomes inside the nucleus must separate to form identical pairs. This sets the stage for each of the daughter cells to have a copy of the DNA to replicate the full sequence.
Does mitosis ensure that each new eukaryote cell receives a copy of each chromosome?
Yes, it does! This occurs during G2 phase of Mitosis.
How are growth differentiation and morphogenesis related to each other?
They all rely on mitosis in order to occur.
What is nondisjunction and what does it occur?
Nondisjunction can occur during Anaphase in mitosis, or either Anaphase I or II in meiosis. This is the step of each aformentioned process when the chromosomes are separated into different regions within the dividing cell, so they can be segregated further by cytokenesis.
During Mitosis the cell is performing its special job?
No, the cell performs its special job during inter phase. During mitosis, the membrane around the cell's nucleus dissolves and the chromatids of each chromosome are separated and pulled to each end of the cell. As the nuclear membrane re-forms around each set of chromosomes, the cytoplasm of the parent cell begins to divide to form two daughter cells.www.answers.com/topic/mitosis
Explain why DNA replication must occur before mitosis starts?
DNA replication must occur before mitosis starts to ensure that each daughter cell receives a complete and identical copy of the genetic information. If DNA replication did not occur before mitosis, the daughter cells would have only half of the necessary genetic material, leading to genetic abnormalities and potentially cell death.
How does a single pair of sister chromatids differ from a single unduplicated chromozone?
Sister chromatids are two copies of a replicated chromosome. Chromosomes occur in pairs. These will be separated in anaphase of mitosis and one chromatid pair will be left for each daughter cell.
