Biology

Biology, 28.07.2019 03:20, caleb19moody

What number represents the common ancestor of mammals and birds?

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Biology, 16.09.2019 07:50, gachaperson123

It can be seen on a cladogram that modern birds and reptiles share a common ancestor. select the piece of evidence that best supports this idea. a)reptiles are also related to mammals. b)birds have evolved into many groups c)feathers are a derived characteristic that first evolved in reptiles. d)birds have the derived characteristic of being warm blooded, like mammals.

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Biology, 20.09.2019 20:10, monicorequena7

According to the tree, turtles are more closely related to mammals than to birds. question 11 options: a) true, because turtles share a common ancestor, w, with mammals. b) true, because turtles are closer to mammals in the tree. c) true, because the ancestor of turtles (w) is connected to the ancestor of mammals (n), whereas the ancestor of birds (p) is separated by one ancestor (c). d) false, because turtles share a more recent common ancestor with birds than with mammals. e) false, because turtles are much more primitive than mammals.

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Biology, 29.09.2019 08:30, mkuhauluasong2020

What is the common ancestor of mammals,birds and snakes

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Biology, 08.10.2019 20:30, joriwilliams3018

Which of the following statements about wings is true? (a) wings are ancestral in bats, but derived in birds. (b) the common ancestor of birds and turtles most likely had wings. (c) wings are an ideal characteristic to use when constructing a phylogenetic tree. (d)the arrangement of bones in bird and bat wings (forelimbs) is a homology, but the presence of wings in birds and bats for flight is an analogy. (e) wings evolved in the common ancestor of the sauropsids & mammals, but were subsequently lost in all groups except bats and birds.

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