Figure 1: Genome elimination caused by centromere differences creates haploid offspring with chromosomes from only one parent. Chromosomes that enter the fertilized zygote with defective CENH3 proteins (green) can be completely lost, producing haploid plants with genetic material from only one parent. For simplicity, the figure shows only two chromosomes from each parent. Telophase chromosome spreads at right are from Arabidopsis thaliana haploids with 5 chromosomes and from diploids with 10 chromosomes.
Simon Chan and Ravi Maruthachalam