Definition, Betydelse, Synonymer & Anagram | Engelska ordet MITOSIS

Definition av MITOSIS

1. (biologi) mitos

Exempel på hur man kan använda MITOSIS i en mening

• During mitosis and meiosis, chromatin facilitates proper segregation of the chromosomes in anaphase; the characteristic shapes of chromosomes visible during this stage are the result of DNA being coiled into highly condensed chromatin.
• Episomes manage this by replicating together with the rest of the genome and subsequently associating with metaphase chromosomes during mitosis.
• Cell division by mitosis is an equational division which gives rise to genetically identical cells in which the total number of chromosomes is maintained.
• In eukaryotes, there are two distinct types of cell division: a vegetative division (mitosis), producing daughter cells genetically identical to the parent cell, and a cell division that produces haploid gametes for sexual reproduction (meiosis), reducing the number of chromosomes from two of each type in the diploid parent cell to one of each type in the daughter cells.
• Sporangia can produce spores by mitosis, but in land plants and many fungi, sporangia produce genetically distinct haploid spores by meiosis.
• The resulting zygote develops through mitosis and cell differentiation, and the resulting embryo then implants in the uterus, where the embryo continues development through a fetal stage until birth.
• The group Ecdysozoa is supported by many morphological characters, including growth by ecdysis, with moulting of the cuticle – without mitosis in the epidermis – under control of the prohormone ecdysone, and internal fertilization.
• Cytoplasmic division begins during or after the late stages of nuclear division in mitosis and meiosis.
• It is referred to as the mitotic spindle during mitosis, a process that produces genetically identical daughter cells, or the meiotic spindle during meiosis, a process that produces gametes with half the number of chromosomes of the parent cell.
• All chromosomes normally appear as an amorphous blob under the microscope and take on a well-defined shape only during mitosis.
• Interphase is the active portion of the cell cycle that includes the G1, S, and G2 phases, where the cell grows, replicates its DNA, and prepares for mitosis, respectively.
• They have also been used to study the biochemical events that surround mitosis, since all of the nuclei in a medium-sized plasmodium divide in synchrony.
• All chromosomes normally appear as an amorphous blob under the microscope and only take on a well-defined shape during mitosis.
• Depending on the biological life cycle of the organism, gametogenesis occurs by meiotic division of diploid gametocytes into various gametes, or by mitosis.
• Cytogenetics is essentially a branch of genetics, but is also a part of cell biology/cytology (a subdivision of human anatomy), that is concerned with how the chromosomes relate to cell behaviour, particularly to their behaviour during mitosis and meiosis.
• Full trisomy 13 is caused by nondisjunction of chromosomes during meiosis; the mosaic form is caused by nondisjunction during mitosis.
• In this part of interphase, the cell synthesizes mRNA and proteins in preparation for subsequent steps leading to mitosis.
• There are three forms of nondisjunction: failure of a pair of homologous chromosomes to separate in meiosis I, failure of sister chromatids to separate during meiosis II, and failure of sister chromatids to separate during mitosis.
• The female germ cells produce a primordial germ cell (PGC), which then undergoes mitosis, forming oogonia.
• This diploid cell, called a zygote or zygospore can then enter meiosis (a process of chromosome duplication, recombination, and division, to produce four new haploid cells), or continue to divide by mitosis.

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