The most likely explanation is that the mixed race has a low diversity in genes.
Explanation:
Elbow dysplasia is a condition that causes a bad development in the elbows of dogs, causing a bad formation of cartilage in that region of the paw, or a bad structure of the surrounding bones.
This condition is common in mixed breeds, because these breeds have little diversity of genes, allowing this disease to be passed to the offspring during crossbreeding between dogs that already have the disease.
They are the opposite of each other. Photosynthesis requires carbon dioxide and releases oxygen, Cellular respiration requires oxygen and releases carbon dioxide.
