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Meiosis have 1 duplication?
Yes. In meiosis, the DNA is replicated once and the cell divides twice.
What happens in meosis 1 that does not occur in meosis 2?
Pairing between homologous chromosomes
When is DNA replicated in s cell?
DNA is replicated during the S phase (synthesis phase) of the cell cycle. This phase occurs between the G1 (gap 1) and G2 (gap 2) phases, prior to cell division. During the S phase, the entire genome is duplicated to ensure that each daughter cell receives an identical set of chromosomes.
What is the stages of meosis?
1. photophase 2. metaphase 3. anaphase 4. telophase
How much DNA would a gamete have if DNA was replicated?
There is twice as much DNA in a chromosome that has replicated than there was before replication.The amount will be halved again at anaphase of the subsequent mitosis (or meiosis II), when the two halves (chromatids) of the chromosome separate, and each half is from then on referred to as a daughter chromosome.
DNA is replicated just prior to this step?
meiosis 1
Meiosis have 1 duplication?
Yes. In meiosis, the DNA is replicated once and the cell divides twice.
What enzyme Cuts out the RNA primer on the replicated DNA molecule and replaces it with the appropriate DNA nucleotides?
The enzyme that cuts out the RNA primer on the replicated DNA molecule and replaces it with the appropriate DNA nucleotides is DNA polymerase I in prokaryotes and DNA polymerase delta in eukaryotes. This process, known as primer removal or primer excision, is essential for completing DNA replication accurately.
What happens in meosis 1 that does not occur in meosis 2?
Pairing between homologous chromosomes
What prevents the separated DNA strands from reattaching to one another during during DNA replication?
What prevents the wrong nucleotide from being added to the new strand during DNA replication? DNA polymerase 3 and DNA polymerase 1 can become what is known as exonucleases. an exonuclease can go back and "proofread" the replicated DNA and if there is a mistake, then everything beyond that incorrect nucleotide is removed and the DNA polymerase 3 will re-replicate from the bad point on. the protein p53 holds the cell in the G1 and S phase of replication which allows more time for proof reading the replicated DNA
What happens During replication DNA .?
During DNA replication the following occurs: 1) An enzyme called helicase separates the DNA strands (the space where they separate is called the replication fork). 2) DNA polymerase adds complementary nucleotides to the separated strand of DNA. 3) The DNA polymerase enzyme finishes adding nucleotides and there are two identical DNA molecules.
Is DNA copied between meiosis 1 and meiosis 2?
No, replication only takes place in the S phase of Interphase. Although, a brief interphase exists between Meiosis 1 and Meiosis 2, there is no S-phase in this case. Hence, no replication takes place between meiosis 1 and 2.
What part of the cell does replication occur?
Replication occurs in the nucleus of a eukaryotic cell and in the cytoplasm of a prokaryotic cell. In eukaryotic cells, DNA replication takes place in the nucleus where the genetic material is located, while in prokaryotic cells, replication occurs in the cytoplasm since they lack a true nucleus.
What happens if DNA pol 1 is nonfunctional in the replicated genome?
If DNA pol 1 is nonfunctional, it can lead to errors in the DNA replication process, leading to mutations or incomplete DNA replication. This can affect the accuracy and stability of the genetic information passed on to daughter cells.
When during the cell cycle is a cell's DNA replicated?
DNA replication occurs during the S stage of interphase. Interphase is the stage between two mitotic or meiotic divisions. It can be slpit into three stages:G1, S and G2. During G1 (gap 1), cells grow and build up ATP on preparation for DNA replication. During the S (synthesis) phase the DNA is replicated. During the G2 phase the cell prepares itself for the process of cell division (mitosis or meiosis). See: http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookmito.html
Phases of meosis?
1. DNA doubles in amount (enough DNA for 92 chromosomes) 2. cell divides into 2 cells (with half the DNA in each cell-enough for 46 chromosomes) 3. both of those cells now divide into 2 (and once again the DNA is halved) 4. final result: 4 new cells formed with 1/4 of the original DNA (enough for 23 chromosomes) important: each time the DNA is halved its sequence mixed around so that the genes sequence on the DNA is changed. as a result each 1 of the 4 daughter cells will be genetically different.
What is the stages of meosis?
1. photophase 2. metaphase 3. anaphase 4. telophase
