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Educational Resources
A germ line is the sex cells (eggs and sperm) that are used by sexually reproducing organisms to pass on genes from generation to generation.
… Germ Line … A germ line is the sex cells (eggs and sperm) that are used by … Reproduction, Cell Biology … Germ line refers to the sex cells (eggs and sperm) that sexually reproducing organisms …
Educational Resources
A somatic cell is any cell of the body except sperm and egg cells.
… Somatic Cells … A somatic cell is any cell of the body except sperm … and egg cells. … Cell, Chromosome, Diploid, Mutation, Germ Line … Somatic cells are the cells in the body other than sperm and egg cells (which are called germ cells). In humans, somatic cells are diploid, meaning …
News Release
In a study published in the journal Science, collaborators at NHGRI, the National University of Ireland, Galway, and the Whitney Laboratory for Marine Bioscience at the University of Florida, Augustine, reported that activation of the gene Tfap2 in adult stem cells in Hydractinia can turn those cells into germ cells in a cycle that can repeat endlessly.
… are shown in yellow; cell nuclei are in turquoise. Germ cell induction and all stages of gametogenesis can be … oocytes are shown in yellow; cell nuclei are in turquoise. Germ cell induction and all stages of gametogenesis can be … called Hydractinia, does so because it produces germ cells, which are precursors to eggs and sperm, nonstop …
Educational Resources
A cell cycle is a series of events that takes place in a cell as it grows and divides.
… mitosis, and completes its division. The resulting cells, known as daughter cells, each enter their own interphase and begin a new round …
Genetic Disorders
Sickle cell disease is a group of inherited red blood cells disorders.
… from the lungs to other parts of the body. Red blood cells with normal hemoglobin (hemoglobin-A) are smooth and … rod-like structures. These structures cause red blood cells to become stiff, assuming a sickle shape. Their shape causes these red blood cells to pile up, causing blockages and damaging vital organs …
Educational Resources
The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment.
… membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside … … Plasma Membrane, Proteins, Glycoproteins, Lipid Bilayer, Cells … The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside …
Educational Resources
Crossing over is the swapping of genetic material that occurs in the germ line.
… is the swapping of genetic material that occurs in the germ line. … Genetic Material, Chromosomes, Meiosis, DNA Sequences, Genetic Variation, Germ Line … Crossing over, as related to genetics and … that occurs during the development of egg and sperm cells (meiosis). This process results in new combinations of …
Educational Resources
A cell is the basic building block of living things.
… … A cell is the basic building block of living things. All cells can be sorted into one of two groups: eukaryotes and … not. Plants and animals are made of numerous eukaryotic cells, while many microbes, such as bacteria, consist of single cells. An adult human body is estimated to contain between 10 …
Educational Resources
A stem cell is a cell with the potential to form many of the different cell types found in the body.
… of the different cell types found in the body. When stem cells divide, they can form more stem cells or other cells that perform specialized functions. Embryonic stem …
News Release
Scientists set their sights on chromatin - the DNA-protein complex that packages DNA into chromosomes in the cell - to better understand how the genome works.
… its make-up is different among cell types, even among cells that are similar. Investigators from two National Human … creating maps of what chromatin looks like in individual cells. They've combined several technologies, including DNA … have gained insights into how genomic information inside cells is controlled - literally turned on or off. The study …