Arborjet > Diseases > Anthracnose. Anthracnose (leaf blight) is a fungus that winters on twig tissue on the tree. In the spring, spores are transported to new buds and shoots. The disease is enhanced by cool, wet conditions. Infected leaves develop tan to reddish brown lesions that extend along the veins of the leaf.
These tables give the total number of chromosomes (including sex chromosomes) in a cell nucleus. For example, human cells are diploid and have 22 different types of autosome, each present as two copies, and two sex chromosomes. This gives 46 chromosomes in total.
Diploid human cells have 2 sets of 23 chromosomes for a total of 46 chromosomes: Autosomal chromosomes: 22 sets of 2. Sex chromosomes: 1 set of 2. Haploid Cell Reproduction. Haploid cells are produced by the process of meiosis. In meiosis, a diploid cell divides twice to produce four haploid daughter cells. Prior to the start of the meiotic cell cycle, the cell replicates it DNA and increases its mass and organelle numbers in a stage known as interphase.