Question: Why do we receive more DNA from our mother than from ours father?

Eoin McKinney answered on 14 Nov 2017:

two reasons – we get all our mitochondria from our mums (they’re basically the power stations inside the cell, producing energy). They’re separate from the rest of the cells DNA (which is in the nucleus). When a sperm and egg combine to give an embryo, everything thats not in the nucleus comes from the mums egg (basically the cytoplasm and everything thats in it). Some mitochondrial diseases are passed on only from mothers as a result.
The other (less important) reason, is that mothers always pass on an X chromosome. Dads pass on a Y chromosome to their sons, and X to their daughters. The Y chromosome is smaller, so technically Dads pass on less DNA that way, too.