Your hypothesis is incorrect considering every day has the same length to it.
They are different ranks in a taxonomy hierarchy. The genus is more exclusive than the phylum.
Order:
Domain,
Kingdom,
Phylum,
Class,
Order,
Family,
Genus,
Species
In the X and Y chromosomes. 50% of your mom's genes are in the X chromosome, and 50% of your dad's in the Y.
