Homologous structures show that two or more species could share a _______ ancestor.
Question 2
2.
Using a complete sentence, define embryology and discuss how it can be used to show an evolutionary relationship.
Question 3
3.
Butterflies taste with their legs, while humans taste with their tongues. In this way, butterflies' legs and humans' tongues are _______ structures.
Question 4
4.
Question 5
5.
Using _______ anatomy, scientists study the similarities and differences among the structures in living species.
Question 6
6.
Joan wrote a science fiction story in which people only texted each other and never talked. They still had vocal chords, but the could not make sounds. Their vocal chords were _______ structures.
Question 7
7.
Question 8
8.
Question 9
9.
Question 10
10.
Question 11
11.
The embryos of all animals with backbones share an identical pattern of development into adult form. This is what they said.
Jolene: I think that the fin of the fish and the flipper of the whale are too different to even compare.
Azila: I think that the fin of the fish and the flipper of the whale have the same structure, but different functions.
Donna: I think that the fin of the fish and the flipper of the whale have a similar function, but differ in structure.
Using a complete sentence, state which friend has the best reasoning and why.
The more homologous structures two species have, the closely related they may be.
True
False
Which of the following is evidence of the evolution of living species?
analogous, vestigial and homologous structures
analogous structures
vestigial structures
analogous and homologous structures
homologous structures
vestigial and homologous structures
These are homologous structures because their origins are different, but they look and act the same.
True
False
The genes and proteins of what animal would you expect to be more similar to the genes and proteins of a dog?
wolf
bear
lion
dogfish
The diagrams show the developing embryos and the adult forms of various types of animals with backbones.
What statement is best supported by comparing the development of those four animals with backbones?
The differences noted in all adult forms show that they do not share a common ancestor.
The shape of each adult form is clearly seen in the early stages of embryonic development.
The similarities noted in the early embryo stages are strong evidence of the existence of a common ancestor.
The embryos of all animals with backbones share an identical pattern of development into adult form.