Although most DNA is packaged in chromosomes within the nucleus, mitochondria also have a small amount of their own DNA. This genetic material is known as mitochondrial DNA…

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During anaphase, the chromosomes are split and pulled towards each centriole. Once the entire cell begins to split in telophase, the chromosomes begin to unravel and new nuclear…

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The recessive phenotype is controlled by the homozygous aa genotype. Therefore, the frequency of the dominant phenotype equals the sum of the frequencies of AA and Aa, and…

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The Principal Stages of M Phase (Mitosis and Cytokinesis) in an Animal Cell. The five stages of mitosis—prophase, prometaphase, metaphase, anaphase, and telophase—occur in strict sequential order, while…

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The accepted number of total chromosomes, given for some 30 years, was 48. In late 1955, Tjio began to look at the chromosomes in human embryonic lung fibroblasts,…

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Most checkpoint-proficient cells arrest at the G2/M checkpoint, with the length of arrest being dependent on the repair capacity. Strikingly, cells released from checkpoint arrest display one to…

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Same phenotype but different genotype is possible due to presence of dominant allele. … A person can have a dominant allele on both the homologous chromosomes (i.e. in…

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Is mitosis happening in your body now? Mitosis takes place when cells need to divide to replace old or damaged cells. Yes, mitosis is taking place right now….

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Patau’s syndrome is a serious rare genetic disorder caused by having an additional copy of chromosome 13 in some or all of the body’s cells. It’s also called…

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Is cancer an error in mitosis or meiosis? Cancer: mitosis out of control These are cancer cells. They continue to replicate rapidly without the control systems that normal…

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