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.
These are diploid cells. However, some cells, like the reproductive cells i,e sperm and ovum, contain 23 chromosomes, since they are to combine with other cells, sperm or ovum, at thw time of fertilization, which will make a normal human diploid cell. These are called haploid cells, which contain 23 chromosomes.