144 results found

Search Results for: mitosis

Mitosis

Mitosis Definition What is mitosis? In biology, mitosis refers to the cellular process where a single cell divides... Read More

Cells know when to separate at mitosis

How do cells know when to separate during mitosis? A molecule called BubR1 was found to regulate the timing of the division... Read More

Parental chromosomes are together but still apart at first mitosis

A recent finding by a team of researchers from European Molecular Biology Laboratory on the parental chromosomes during the... Read More

Meiosis

What is Meiosis? A simple definition of meiosis would be is this: meiosis is the process of cell division that results in... Read More

Multipolar mitosis

Multipolar mitosis Abberant mitotic figures, where the chromosomal material is pulled to more than two poles. Multipolarity... Read More

Amitosis

Definition noun, plural: amitoses A direct type of cell division wherein the nucleus and the cytoplasm go through a simple... Read More

Quantal mitosis

quantal mitosis A controversial concept in cellular differentiation proposed by H. Holtzer and defined by him as a mitosis... Read More

Meiosis and Alternation of Generations

Review of Mitosis: Cell Cycle The cell cycle contains the process in which cells are either dividing or in between... Read More

Binary fission

Binary fission definition What is binary fission? In biology, binary fission is a type of asexual reproduction where a... Read More

Centrosome

Centrosome Definition What is a centrosome? The centrosome is considered to be the main microtubule-organizing... Read More

Prophase

Definition noun The phase following interphase and preceding metaphase of cell divisions (i.e. mitosis and meiosis), and in... Read More

Mitotic spindle

Definition noun The collective term for all the spindle fibers that form during mitosis Supplement The spindle apparatus is... Read More

Chromatin

Chromatin Definition What is chromatin in a cell? Chromatin is a complex of nucleic acids (e.g. DNA or RNA) and proteins... Read More

Homologous chromosome

A homologous chromosome pertains to one of a pair of chromosomes with the same gene sequence, loci, chromosomal length, and... Read More

Telophase

Definition noun The final phase following anaphase of cell divisions (i.e. mitosis and meiosis), and highlighted by the... Read More

Anaphase

Definition noun The phase following metaphase and preceding telophase of cell divisions (i.e. mitosis and meiosis), and... Read More

Metaphase

Definition noun The phase following prophase and preceding anaphase of cell divisions (i.e. mitosis and meiosis), and... Read More

Zygote

Zygote Definition What is a zygote? A zygote is a fertilized eukaryotic cell. In biology, medical science, and other allied... Read More

Sexual reproduction

Sexual reproduction is a mode of reproduction involving the fusion of haploid female gamete (egg cell) and haploid male... Read More

Chromatid

Definition noun, plural: chromatids Either one of the two strands joined together by a single centromere, formed from the... Read More

Chromatids

Definition noun, singular: chromatid The two strands joined together by a single centromere, formed from the duplication of... Read More

Endomitosis

Endomitosis (Science: cell biology) chromosome replication without mitosis, leading to polyploidy. Many rounds of... Read More

Prometaphase

Definition noun The phase of mitosis between prophase and metaphase wherein the nuclear envelope breaks down and form... Read More

Metaphase plate

Definition noun The plane in the equatorial region of the spindle where chromosomes align during cell division (i.e. mitosis... Read More

Aster

Definition noun, plural: asters (cell biology) A star-shaped cluster of microtubules radiating from the pericentriolar... Read More

Cell cycle

Definition noun (cell biology) The sequence of growth and division of a cell, and consists of a series of biological... Read More

Cell division

Definition noun, plural: cell divisions The process in which the parent cell divides, eventually giving rise to new daughter... Read More

Vascular plants

Definition of Vascular plants The term 'vascular' is derived from the Latin word vāsculum, vās, meaning "a container and... Read More

Plant Cells vs. Animal Cells

Plant Cells Most cells are not visible with the naked eye. However, with microscopes of various types, plant cells can be... Read More

Human Reproduction

Terminology and Concepts Primary reproductive organs are called gonads - testes in the male and ovaries in the female.... Read More

Cohesion

Cohesion Definition What is cohesion? Cohesion, in science definition, refers to the state of cohering or sticking together... Read More

Nuclear division

Definition noun The process by which a nucleus divides, resulting in the segregation of the genome to opposite poles of a... Read More

Kinetochore

Definition noun, plural: kinetochores A protein complex that assembles at the centromeric region of the chromosome during... Read More

Astral microtubule

Definition noun, plural: astral microtubules Any of the microtubules radiating from the pericentriolar region (or the... Read More

Spindle fiber

Definition noun, plural: spindle fibers Any of a network of filaments that collectively form a mitotic spindle (in... Read More

Gamete

Definition of Gamete What is a gamete? A gamete is the mature reproductive or sex cell that contains a haploid number of... Read More

Asexual reproduction

Asexual Reproduction Definition What is asexual reproduction? Asexual reproduction is a mode of reproduction that does not... Read More

Demecolcine

Definition noun (cytogenetics) A cytotoxic alkaloid isolated from Colchicum autumnale, and is used as an antineoplast... Read More

Metaphase I

Definition noun The second stage in the first meiotic division after prophase I, and highlights the alignment of paired... Read More

Sister chromatids

Definition noun, singular: sister chromatid The two identical strands joined by a common kinetochore as a result of a... Read More