Three living species X, Y, and Z share a common ancestor T, as do extinct species U and V. A grouping that consists of species T, X, Y, and Z (but not U or V) makes up

a. a monophyletic taxon.

b. an ingroup, with species U as the outgroup.

c. a paraphyletic group.

d. a polyphyletic group

Question

Biology

Skylar Mckay

15 November, 19:21

Three living species X, Y, and Z share a common ancestor T, as do extinct species U and V. A grouping that consists of species T, X, Y, and Z (but not U or V) makes up

a. a monophyletic taxon.

b. an ingroup, with species U as the outgroup.

c. a paraphyletic group.

d. a polyphyletic group

+3

Answers (1)

Know the Answer?

Watson · Answer 1

C. a paraphyletic group.

Explanation:

When referring to phylogeny a group can be considered paraphyletic when it includes the common ancestor, but it does not include all the descendants from this common ancestor.

The group is (T, X, Y, and Z), the other group is (U and V) and they both share a common ancestor (T).

The use of paraphyletic group is still controversial. Some accepted and other don't.

Three living species X, Y, and Z share a common ancestor T, as do extinct species U and V. A grouping that consists of species T, X, Y, and Z (but not U or V) makes upa. a monophyletic taxon.b. an ingroup, with species U as the outgroup.c. a paraphyletic group.d. a polyphyletic group

Three living species X, Y, and Z share a common ancestor T, as do extinct species U and V. A grouping that consists of species T, X, Y, and Z (but not U or V) makes up

a. a monophyletic taxon.

b. an ingroup, with species U as the outgroup.

c. a paraphyletic group.

d. a polyphyletic group