How many different phenotypes could exist for this trait suppose only one gene with two alleles determines

What makes a dominant allele different from a recessive allele

Which to produce involved from a symbiotic relationship of organisms which resulted in eukaryotic organisms contain chloroplast

The table above shows five different types of chromosomal abnormalities that can occur during meiosis. they result in either an individual having too many or too few chromosomes in their genome. what is the most likely cause of these chromosomal abnormalities?