La teoría de la evolución: las pruebas

The video explains natural selection as a revolutionary yet simple idea that unifies biology. It discusses fossil evidence showing the evolution from simple to complex life forms, highlighting intermediate forms. The similarities in structures and genetic code among species support the theory of common ancestry. Evolution is observable through species adapting to changes, exemplified by the birch butterfly's color change due to industrial pollution. The theory of evolution underpins all biological observations.

What is the significance of natural selection in the context of biological evolution?

• It is a simple idea that unifies and explains the natural world.

• It is a theory that has been largely disproven.

• It is a concept that only applies to human evolution.

• It is a complex idea that only applies to certain species.

How do fossil records support the theory of evolution?

• They provide no evidence of intermediate forms.

• They indicate a progression from complex to simple life forms.

• They show a random assortment of life forms.

• They demonstrate a temporal succession from simple to complex life forms.

What do the similarities in the forelimbs of frogs, lizards, birds, and rabbits suggest?

• They are identical in both structure and function.

• They evolved independently without any common ancestor.

• They have the same bones but different functions.

• They have different bones but similar functions.

What is the most significant homology that supports the theory of common ancestry?

• The genetic code shared among species.

• The presence of similar habitats.

• The dietary habits of various species.

• The color patterns in different species.

How did the birch butterfly adapt to environmental changes in the 19th century?

• By migrating to a different region.

• By changing its diet.

• By altering its color for better camouflage.

• By developing a new mating call.