(1) Of, or pertaining to the inability to sustain, maintain, or keep
(2) Not capable of being renewed
The nucleus containing the genetic material, DNA, and the mitochondria, well-identified as the "powerhouse of the cell",..
DNA is a double helix structure comprised of nucleotides. A nucleotide, in turn, is made up of phosphate molecule, deoxy..
Ferns and their relatives are vascular plants, meaning they have xylem and phloem tissues. Because of the presence of va..
In plants, growth occurs in meristems, which are the site of repeated cell division of unspecialized cells. These cells ..
This tutorial is a continuation of the first lesson on chromosomal mutation. Here, find out the chromosomal aberrations ..