Question

read the paragraph about polydactyl cats. select the sentence that should be removed to improve the focus of the paragraph. seven, bigfoot, and thumbelina are all good names for cats with extra toes, a phenomenon caused by a harmless genetic mutation known as polydactyly. other common genetic mutations in cats result in stubby tails and folded ears. polydactyl cats have as many as nine toes on each paw, compared to the usual four or five. in the 1800s, these cats were popular with sailors, who believed the cats extra toes made them better at catching mice and climbing. the sailors often brought the felines along with them on their journeys, causing the polydactyl mutation to spread. today, polydactyl cats are especially common along the eastern coast of the united states and canada, as well as in wales and parts of england, the same regions frequented by their seafaring ancestors.

Explanation:

The paragraph is about polydactyl cats. The sentence "Other common genetic mutations in cats result in stubby tails and folded ears" is off - topic as it discusses other mutations instead of focusing on polydactyly.

Answer:

"Other common genetic mutations in cats result in stubby tails and folded ears."