Question

The diagram represents some stages in the 19. development of the modern horse, according to evolutionary theory. The diagram is based on the

1. examination of homologous fossilized structures of primitive horses

2. biochemical analysis of growth hormones of primitive horses

3. examination of the embryological structures of the modern horse

4. biochemical analysis of the DNA structure of the modern horse.

Edit: I got it, the answer was A

Answer 1

im trying to get some points but this is correct still. it is 1.

Answer 2

Hello. You forgot to add the diagram.

The diagram is attached below.

Answer:

1. examination of homologous fossilized structures of primitive horses

Step-by-step explanation:

As you can see in the diagram, to show the stages of the development of the modern horse, a comparison is made between the forelimb structure and the molar tooth of these horses (related to the adult form). These two factors of comparison establish the representation of fossilized homologous structures of primitive horses.

As you may already know, homologous structures are different body structures from different animals that have a strong similarity (because they are inherited from a common ancestor). When these animals die and these structures are conserved, we can say that they have been fossilized.

As the forelimb structure and the molar tooth of the horses shown in the diagram are homologous structures that were fossilized, we can say that option 1 is the correct answer to your question.