Microspores either germinate into the male gametophyte or have the male gametophyte develop inside the microspore wall. A network of neurons that connects with the forebrain and relays sensory signals to other integrating centers. A layer composed of pectin that cements two adjoining plant cells together. A group of steroid hormones produced by the adrenal cortex that are important in maintaining electrolyte balance. The powerhouse of the cell.
Mitosis occurs only in eukaryotes .
The DNA of the cell is replicated during interphase of the cell cycle and then segregated during the four phases of mitosis. A network of microtubules formed during prophase . Some microtubules attach to the centromeres of the chromosomes and help draw the chromosomes apart during anaphase . Members of this kingdom were among the first forms of life over 3.5 billion years ago. In genetics, a cross that involves only one characteristic.