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How many chromosomes are in sex cells after DNA replication?
There are 23, so when sexual reproduction acurrs the fetus will have 46
What 2 cell division processes use DNA replication?
Mitosis and meiosis are the two cell division processes that utilize DNA replication. During both processes, DNA is replicated in the S phase of the cell cycle to ensure that each daughter cell receives an identical copy of the genetic material.
Differentiate the number of replication forks in prokaryotic and eukaryotic DNA?
Prokaryotic DNA replication typically proceeds bidirectionally from a single origin of replication, resulting in two replication forks. Eukaryotic DNA replication is more complex due to multiple origins of replication, leading to many replication forks scattered throughout the DNA. The exact number of replication forks in eukaryotic cells can vary depending on the species and cell type.
If a cell has 46 chromosomes a the beginning of meiosis then at anaphase 2 there would be a total number of how many chromosomes?
At the beginning of meiosis, a cell with 46 chromosomes would undergo DNA replication to end up with 92 chromatids. During anaphase 2 of meiosis, these chromatids would separate, resulting in daughter cells with 46 chromosomes each, the same as the original cell before replication.
Why does the adder's tongue fern have more chromosomes than eukaryotes?
Adder's tongue fern (Ophioglossum reticulatum) has more chromosomes (1260) than most eukaryotes because it undergoes a unique form of genome duplication - polyploidy. Polyploidy, particularly in plants, can lead to an increase in the number of chromosomes, which can enhance genetic diversity and adaptation to different environments.
Compare the number of replication forks in prokaryotic and eukaryotic DNA during replication?
Prokaryotic DNA replication has a single origin of replication, leading to two replication forks. In contrast, eukaryotic DNA replication has multiple origins of replication, resulting in multiple replication forks forming along the DNA molecule.
How the chromosomal number of the cell is kept constant through mitosis?
By uniform replication of DNA and division of centomeres, the daughter nuclei receive the same number of chromosomes.
How many cells have after mitosis?
After replication of the 46 chromosomes, the cell contains 92 chromatids (in 46 pairs). After mitosis two identical cells are created with the same original number of chromosomes, 46.
What is the term used for the number of chromosomes found in a cell?
there are no chromosomes???????? mitosis needs them first....?
Why are Chromosomes called Double Chromosomes?
After DNA replication, there are double the number of chromosomes, which will be divided into two identical daughter nuclei during mitosis. For example, a normal human body cell has 46 chromosomes. When it undergoes DNA replication, the chromosomes are doubled so that there will be 92 chromosomes, consisting of 46 pairs of sister chromatids. During mitosis, the sister chromatids separate into two identical daughter nuclei, each having 46 chromosomes.
How many chromosomes does each cell have in inter phase?
Thre are 46 chromosomes in any common human cell during interphase. 22 pairs of autosomes and one pair of sexual chromosomes.
Where is the DNA in prokaryote in a eukaryote?
DNA in prokaryotic cells is usually circular while DNA in eukaryotes is usually linear. DNA in prokaryotes usually has fewer portions that dont code for something while eukaryotes usually have quite a bit of DNA sections that dont code for anything. The number of actual base pairs (the units that makeup DNA) that makeup eukaryotes is usually quite a bit more than the number in prokaryotic DNA.
