In Labrador retrievers, black coat (B) color is dominant to brown (b). Suppose that a black Lab is mated with a brown one and the offspring are four black puppies and one brown puppy. What can you conclude about the genotype of the black parent

the black parent was possibly is a litter of a black Labrdor family therfore giving a solid brown

Explanation:

a full black labrador cannot prudouce a Solid brown pup even with a brown parent you would get either a black with brown spots or brown with black spots, therefore the black parent is a liter of a black and brown litter.

it would lead to upper respiratory infections and pneumonia.

because the light is a great source of energy for the plants to survive. (i hope this )