The base plan for all land animals is 5 digits per limb. This is inherited from the first amphibians that left the sea to live on land. They, in turn, inherited their 5-digit limbs from a fish-like ancestor that was able to breathe air. The exact number is probably a historical accident.
Jun 14, 2021
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Why do we have 5 fingers and 5 toes?
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Oct 8, 2021 · We have finger and toenails because our primate ancestors did. They were used for fighting, climbing, digging for food and grooming etc. Our ...
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Nov 18, 2021 · Every human has a locus on some chromosome that can contain one of the following alleles: one for five fingers and one for six fingers. The ...
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Sep 9, 2018 · Fin to limb theories revolve around a reduction of digits to accompany more rotation of the wrist and ankle joints, the muscles in the forearm ...
Aug 18, 2013 · Humans have five toes because we have descended alongside primates that were arboreal and clung to branches with their feet. Any less than five ...
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Jun 15, 2018 · It's called “polydactyly", it's a condition a person is born with in which there are more than 5 fingers and/or toes on a hand/foot. It's rare, ...
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Polydactyly is a condition in which a baby is born with one or more extra fingers. It is a common condition that often runs in families. The extra fingers ...
Nov 6, 2018 · Polydactyly, also known as hyperdactyly or hexadactyly is the most common hereditary limb anomaly characterized by extra fingers or toes, ...
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