Question

Which characteristic is shared by humans, wallabies, and trout? (1 point)
Responses

mammary glands
mammary glands

four limbs
four limbs

notochord
notochord

placenta
placenta
Question 2
Which animals have the closest evolutionary relationship, as shown by the cladogram? (1 point)
Responses

humans and lizards
humans and lizards

humans and lampreys
humans and lampreys

humans and wallabies
humans and wallabies

humans and trout
humans and trout
Question 3
A valid conclusion from this cladogram is that(1 point)
Responses

salamanders, trout, and lampreys all have a backbone.
salamanders, trout, and lampreys all have a backbone.

mammary glands appeared in vertebrate evolution after the placenta appeared.
mammary glands appeared in vertebrate evolution after the placenta appeared.

humans and lampreys share a common ancestor.
humans and lampreys share a common ancestor.

four limbs appeared in vertebrate evolution before the notochord appeared.

Answer 1

Here are the answers to the questions based on the descriptions provided:

**Question 1: Which characteristic is shared by humans, wallabies, and trout?**
- Response: **notochord**
(All three belong to the phylum Chordata, which is characterized by having a notochord at some stage of their development.)

**Question 2: Which animals have the closest evolutionary relationship, as shown by the cladogram?**
- Response: **humans and wallabies**
(Humans and wallabies are both mammals, indicating a closer evolutionary relationship compared to the other pairs listed.)

**Question 3: A valid conclusion from this cladogram is that**
- Response: **humans and lampreys share a common ancestor.**
(Cladograms show evolutionary relationships; if humans and lampreys are on the same branch, it indicates they share a common ancestor.)

Please ensure you have the correct information or context to verify these answers based on the specific cladogram you are referencing.