The nuclear membrane dissolves, marking the beginning of prometaphase. Proteins attach to the centromeres creating the kinetochores. Microtubules attach at the kinetochores and the chromosomes begin moving. Metaphase: Spindle fibers align the chromosomes along the middle of the cell nucleus. This line is referred to as the metaphase plate. This organization helps to ensure that in the next phase, when the chromosomes are separated, each new nucleus will receive one copy of each chromosome. Anaphase: The paired chromosomes separate at the kinetochores and move to opposite sides of the cell.
plum - any of numerous varieties of small to medium-sized round or oval fruit having a smooth skin and a single pit. genus Prunus, Prunus - a genus of shrubs and trees of the family Rosaceae that is widely distributed in temperate regions. wild plum, wild plum tree - an uncultivated plum tree or shrub. common plum, Prunus domestica - any of various widely distributed plums grown in the cooler temperate areas.
A nut may be defined as a one-seeded fruit with a hard pericarp (ripened ovary wall). One or several nuts may sit in a cup-shaped structure called an involucre. In oaks (Quercus) the involucre is composed of small scales and the entire structure (involucre plus nut) is called an acorn.hese false nuts are really the seed-bearing, hard, inner layer (endocarp) of a fruit called a drupe. In dry drupes the outer layer or husk sometimes splits open or withers. This outer husk is part of the ovary wall (pericarp), and the hard inner wall surrounding the seed represents the inner part of the pericarp.