Freud theorized, and many modern Psychologists agree, that people tend to end up with a life partner that’s similar to their opposite sex parent.
So a girl may end up with a man like her father, and a boy with a girl like his mother.
This is usually because they have a stronger bond with those parents.
However; this can be altered depending on which parent they have a stronger bond with. A boy strongly attached to his father may find himself with a partner (male or female) with similar traits, and vice versa.
Translating that to Astrology, I don’t think it’s quite as likely to be the same Sign, but I do think it’s quite likely to be with someone of the same Element.
However; it may not be the same sign/element, as much as the similar traits. Like, the romanticism of a Pisces parent may subconsciously lead you to end up with a Libra, because you enjoy that romantic nature.
I’ll use myself and my Husband as examples.
I absolutely adore my (Virgo) father. There are many reasons that I won’t get into, but many discussions with my (Capricorn) husband had lead us to discover that both my father and my Husband have many similar traits. This is a good example of a girl ending up with a partner of the same element as her father.
On the other hand, my husband’s mother was absent for most of his life. He has a very strong bond with his (Virgo) father. Discussions also lead us to discover that his Father and I (Aries) share many traits, specifically our playful/childish nature. This shows not only the connection to a parent of the same gender of them, but also choosing a partner not of similar element of Zodiac Sign, but similar traits nonetheless.