Man Spots A Strange Animal In The Polar Region,later Discovers The Reason Behind Its Unusual Origin

What If?

Since all the hybrids had a polar mother and grizzly fathers. The polar mother raised them like polar bears. But what would have happened if they had a grizzly mother? We know for sure the hybrids are a result of polar mothers and grizzly father. But since this has only happened in the captivity we can’t say for sure how would the hybrids have behaved if the situation was reversed.