Brachydactyly is a condition in which fingers are abnormally short. The last two joints of the middle finger are shortened. In the other four fingers, the last two joints are fused into one and are also shortened. Use symbols B for dominant, b for recessive.

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Answer and Explanation:

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a sarcodine because it has a pseudopod

The diagram is showing a sarcodine because it has a pseudopod. Sarcodine is a protozoa. These organisms exhibit cytoplasm and use a temporary extension cytoplasmic extension called as pseudopodium, which helps in locomotion and feeding. The shape of these organisms is typically circular or irregular. They may contain more than one nucleus. The food which adheres to the surface of the cell is trapped by the pseudopodium and is digested by the vacuoles.