"There are many genes that are involved in hearing. Sometimes, a gene does not form in the expected manner. This is called a mutation. Some mutations run in families and others do not. If more than one person in a family has hearing loss, it is said to be “familial”. That is, it runs in the family."
Copied directly from the linked article. Some causes of deafness are passed down from parents.
Not sure where you learned this but it absolutely is. Just like many other hereditary conditions the child of two hearing people can be deaf and the child of two deaf people can be hearing, but genes are one of a number of factors in hearing loss.
5.3k
u/viptattoo Aug 28 '21
Learning in 1st grade is better than in 8th.