In seals, long-whiskers (W) is dominant to short-whiskers (w).?

If a long wiskered seal whoes genotype is unknown is crossed to a short- whiskered seal, what are the possible genotypes of the long-whiskered parenent? If the long-whiskered parents is homozygous, what percentage of the offspring will be long-whiskered? If the long-whiskered parent is heterozygous, what percentage of the offspring will be long-whiskered?