Evolución convergente: ¿Por qué son iguales especies diferentes?

The video explores the concept of convergent evolution, where unrelated species develop similar traits due to similar environmental pressures. It contrasts this with divergent evolution, where species with a common ancestor evolve different traits. Various examples, such as palm trees, ichthyosaurs, and Tasmanian tigers, illustrate these concepts. The video also delves into molecular and genetic factors, discussing how similar genetic sequences can lead to convergent traits. It concludes with a discussion on the limitations of evolution and the potential for similar life forms to evolve under similar conditions.

What is the primary reason palm trees are not considered true trees?

• They have a filamentous trunk.

• They are tall.

• They produce coconuts.

• They have leaves on top.

Which type of evolution is characterized by similar traits in different species due to similar ecological niches?

• Divergent evolution

• Convergent evolution

• Parallel evolution

• Adaptive radiation

What did Darwin observe about the birds on the Galapagos Islands?

• They had similar beaks.

• They were of different families.

• They had different beaks but were of the same family.

• They were all flightless.

Which of the following is an example of convergent evolution?

• Cat's paw and whale's fin

• Human arm and bat's wing

• Bird's wing and bat's wing

• Cat's paw and mantis's paw

Which extinct animal is known for having a torpedo-shaped body and a prominent dorsal fin?

• Dolphin

• Shark

• Ichthyosaur

• Whale

What is a key feature of casuarinas that differentiates them from pine trees?

• They have a woody trunk.

• They are angiosperms.

• They are gymnosperms.

• They have needle-shaped leaves.

Which of the following is NOT an example of convergent evolution?

• Long necks of giraffes and brachiosaurus

• Echolocation in bats and dolphins

• Beak of ducks and platypus

• Opposable thumbs in humans and pandas

What is a possible explanation for similar genetic sequences across different species?

• Natural selection

• Horizontal gene transfer

• Genetic drift

• Divergent evolution

What does the pax 6 gene influence in many species?

• Beak shape

• Leg development

• Wing structure

• Eye formation

According to George R McGee, what might intelligent life on an Earth-like planet resemble?

• Creatures with multiple arms

• Organisms with tentacles

• Beings with a big brain and upright posture

• Species with wings and scales