Which best describes how the front limbs of horses have changed over time?
A.They have gained additional toes.
B.The bones have become stronger.
C.The toes have reduced in number.
D.The bones have become shorter.
I think the answer is they have additional toes,but I don’t know that much can someone help me understand this,and also this is a winter break packet from science academy and I’m in 8th grade!
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No, no, no. The ancestors of the horse came to walk only on the end of the third toe and both side toes. Skeletal remnants show obvious wear on the back of both sides of metacarpal and metatarsal bones, commonly called the "splint bones". They are the remnants of the second and the fourth toe. Modern horses retain the splint bones; they are often believed to be useless attachments, but they in fact play an important role in supporting the carpal joints (front knees) and even the tarsal joints (hocks)
1 answer