Abnormalities in the head of sperm, such as being too large or too small, or double-headed sperm, typically lead to defects in the genetic material of the father, causing fertilization failure or resulting in unviable embryos.
Other types of morphological defects, such as round-headed sperm, can cause difficulties in the sperm to fertilize the egg cell, leading to fertilization failure as well.
Read the full article on: What Types of Sperm Morphological Defects Exist? ( 72).
By Zaira Salvador B.Sc., M.Sc. (embryologist) and Sandra Fernández B.A., M.A. (fertility counselor).
Last Update: 11/27/2018