1/4, because when you use punnett squares, you'll realize that one baby can have white fur, two can have the gene of white fur, but still have the dominant broiwn fur gene, and one could have only the brown fur gene that it got from both its mom and its dad
Small animals that live in the splash zone can avoid desiccation by closing their shells tightly to seal in moisture. Some animals, like crabs and marine snails and bivalves, have thick, tough outer coverings to slow evaporation.