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chapter 5 vocab
Science 9
| Term | Definition |
|---|---|
| asexual reproduction | reproduction that requires only one parent and produces offspring that are genetic copies of the parent |
| binary fission | a form of asexual reproduction in which a single parent cell replicates its genetic material and divides into two equal parts |
| budding | a form of asexual reproduction in which areas of an individual may undergo repeated mitosis and cell division and can develop into an identical organism |
| cancer | the result of uncontrolled cell division |
| cell cycle | the three stages of the life of a cell, including the sun, the moon, planets and the stars |
| clone | an identical genetic copy of an organism's parent |
| cytokinesis | the final stages of the cell cycle, which separates the two nuclei and cell contents into two daughter cells |
| fragmentation | a form of asexual reproduction in which each fragment of an organism develops into a clone of its parent |
| interphase | the first and longest stage of the cell cycle, in which cells carry out life functions and cells that divide prepare for cell division |
| mitosis | the second, and shortest stage of the cell cycle; the process in which the duplicated contents of the cells nucleus divides into two equal parts |
| replication | the process during which the cell copies 3 billion base pairs of DNA information it the nucleus |
| spindle fibres | tiny tube-like structures made of protein to which chromosomes attach during cell division |
| spore | reproductive cells that grow into new individuals by mitosis |
| stem cell | cells that have the potential to become many different types of cells; two types of stem cells are embryonic stem cells and adult stem cells |
| vegetative reproduction | reproduction in which special cells, usually in plant stem cells and plant roots, divide repeatedly to form structures that will eventually develop into a plant identical to the parent |