Question specifically regards vertebrates. Vertebrata is a Subphylum within the Chordata Phylum, and Animalia Kingdom. Vertebrates are animals with backbones and consist of 4% of the described animal species, and include mammals, birds, amphibians, reptiles, and several Classes of fish.

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What genetic link would cause a human to have a extra vertebra?

Most people have five vertebrae in their lumbar (lower back) region, which are named L1 to L5. However, some people possess an additional lumbar vertebra located below the L5. This extra vertebra, ...
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3answers
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Why are there splice variants within the same organism? What might contribute to the need for the feature?

I only know splice variants are produced by different combinations of introns and exons. I wish to know why there is a need of such function. Perhaps using the same amount of DNA sequence to produce ...
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Which is the guideline to choose a molecular target to identify vertebrate hosts from arthropod bloodmeals?

There are some molecular targets to identify vertebrate hosts from arthropod bloodmeals including the Cyt b gene and the COI gene. Which are the standards or characteristics that I have to bear in ...
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The suspended cat clavicle

I know the clavicle of the cat floats freely as opposed to be attached as in humans. This is supposed to allow them to be able to squeeze through spaces, according to a quick google search. But how ...
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Difference between intervertebral and vertebral foramina

In the human spine, what is the difference between intervertebral and vertebral foramina? Is it just a matter of perspective and do they refer to the same thing or are they different?
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What is the smallest known organism with a skeleton? [closed]

See question title. After doing some looking around on my own I haven't found much so I figured I'd ask some experts.
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Why is venom more common in fish and snakes than other vertebrates?

Reading this question, I wondered why is it that we associate vertebrate venoms so often with snakes and fish, and more rarely with lizards, amphibians, mammals, and birds (apparently never, in ...