They undergone genetic mutation that influenced their fur color.
Mutations result either from accidents during the normal chemical transactions of DNA, often during replication, or from exposure to high-energy electromagnetic radiation (e.g., ultraviolet light or X-rays) or particle radiation or to highly reactive chemicals in the environment. Mutation can be of 4 types Germline mutations occur in gametes. Somatic mutations occur in other body cells. Chromosomal alterations are mutations that change chromosome structure. Point mutations change a single nucleotide. Frameshift mutations are additions or deletions of nucleotides that cause a shift in the reading frame. Factor that influenced mutation are the size of the gene, its base composition, its position in the genome, and whether or not it is being actively transcribed influence its mutation rate.
<em><u>The pith is a part of the Ground tissue together with the cortex. The cortex is located to the outside and/or around the vascular bundles, while the pith is locate in the center of the stem. </u></em>
Both the cortex and pith are composed mainly of parenchyma cells. On the other hand collenchyma cells give support to the stem and may occur under the epidermis in the cortex.
Pith is composed of soft, spongy parenchyma cells, which store and transport nutrients throughout the plant.
Budding is the asexual mode of reproduction. In budding there is no involvement of male and female gamete. Hence budding is a type of asexual reproduction.
