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What type of animal was the common ancestor of mammals and birds?
The common ancestor of mammals and birds was a reptile.
Do humans and bats have a common ancestor?
Yes, humans and bats share a common ancestor. Both humans and bats belong to the group of mammals, which evolved from a common ancestor millions of years ago.
What fact implies that Nearly all mammals have seven cervical neck vertebrae?
all mammals descended from a common ancestor.
Nearly all mammals have seven cervicals what does this fact imply?
They are all descended from a common ancestor.
What is a similar structure that related species inherit from a common ancestor?
Homologous structures are similar structures that related species inherit from a common ancestor. These structures may have different functions in different species but share a similar underlying anatomy, suggesting shared evolutionary origins. Examples include the wing of a bird and the flipper of a whale, both being modified versions of the forelimb structure shared by their common ancestor.
Do all mammals have a common ancestor?
Not actually. There were several different marine reptiles that had mammalian characteristics, notably the group known as pelycosaurs. The earliest mammals appeared early in the Age of Reptiles (Mesozoic Era), but were uniformly small in size. The group called synapsids took an evolutionary path to mammals while the sauropsids became today's reptiles and birds.
What is the common ancestor that a human and porpoise may have?
It's been estimated that 75% of mammals are now extinct, so it's unlikely that a common ancestor still exists as a modern species. However, if we saw a common ancestor we'd probably say it looked like a shrew.
Did jaws develop independantly in mammals and birds?
No. Both mammals and birds "inherited jaws" from a common reptilian ancestor which ultimately originated in an early fish.
What are the similarities of human and chicken embryo?
Mammals, birds, and reptiles all derive from a single common ancestor.
What is ancestral characters?
An Ancestral Character is a character inherited from a COMMON ancestor. For example the presence of lungs in mammals (an ancestral character) does not indicate that mammals are more closely related to amphibians vs. reptiles, or reptiles vs. birds etc., etc. It is simply a character inherited from a common ancestor.
What type of mammals are closely related to reptiles?
All mammals evolved from a common ancestor, which was the very first mammal. That very first mammal had evolved from reptiles. As such, all mammals are equally related to reptiles.
What evidence suggests that humans and bats have a common ancestor?
For one, both humans and bats are in the class Mamalia, which is reason enough to suggest that they come from a common ancestor. The modern classification system, developed by Linnaeus, and modified by scientists such as Darwin and Lyell, is based of common ancestors. So, all mammals come from a common ancestor. How do we know this? Well, all mammals share a peculiar trait: All mammals are completely indistinguishable at the pre embryonic stage. This proves that bats and humans come from common ancestry.
