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.
Humans have diploid cells, meaning each one contains two copies of each chromosome. The number of unique chromosomes, including sex chromosomes, is 23 in humans. This is the n, or haploid number. 2n, or the diploid number is 46, and refers to the actual number of chromosomes in a human cell, including the duplicates.