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Sharks, dolphins, and penguins are not closely related, but all have converged on a streamlined body form because they swim through the water.Another example of analogous structures are dolphins and sharks as whole species. Although we might think of dolphins and sharks as being relatively similar, their morphology says otherwise. Dolphins are mammals that have live births and have fins with a homologous structure to human arms.Are flippers in these two organisms an example of Homologous or Analogous structures? Analogous structures since the animals are not closely related, so the flippers likely developed independently rather than from a common ancestor. 6.
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Are sharks and dolphins homologous or analogous?
Another example of analogous structures are dolphins and sharks as whole species. Although we might think of dolphins and sharks as being relatively similar, their morphology says otherwise. Dolphins are mammals that have live births and have fins with a homologous structure to human arms.
Are flippers in these two organisms an example of homologous or analogous structures?
Are flippers in these two organisms an example of Homologous or Analogous structures? Analogous structures since the animals are not closely related, so the flippers likely developed independently rather than from a common ancestor. 6.
Patrice O’Neal – Sharks vs. Penguins (Updated Version)
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When we compare the fins of dolphin and penguin they are?
Flippers of penguin and dolphin have a similar function (helps in swimming) but different origin so they are called analogous organs.
Are ducks and platypus closely related?
The duck-billed mammal is related to reptiles and birds, a study finds. The genome of the platypus—our most distant mammal relative—has been decoded and analyzed, researchers reported today. The duck-billed mammal has a genetic affinity with both reptiles and birds, according to a new study.
Why dolphins and sharks are not related?
Dolphins, and other mammals, are warm blooded, give birth to live young, nurse their young, are born with hair, and breathe air. Sharks, like other fish, have gills to remove oxygen from the environment, are cold blooded, and have scales.
Do dolphins and sharks have a common ancestor?
We know that dolphins and sharks are not closely related, and they didn’t inherit their similar body shapes from a common ancestor. Their streamlined bodies, dorsal fins and flippers are the result of convergent evolution.
Can you say that human whale and bat might belong to a common ancestor?
Homologous structures are similar physical features in organisms that share a common ancestor, but the features serve completely different functions. An example of homologous structures are the limbs of humans, cats, whales, and bats.
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A shark and a penguin are similar in that they both have flippers to propel themthrough the water.Are sharks and penguins closely related?
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These environments, therefore, exert similar pressures on the evolution of … the streamlined form in the bodies of squid, shark, seal, porpoise, penguin, …
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Fish and penguins are both vertebrates that use fins to swim in deep waters. However, penguins come from a flying ancestor. They lost the ability to fly around …
What is the best way to determine how closely organisms are closely related?
However, now scientists can also analyze DNA to discover how closely organisms are related. Every living creature has DNA, which has a lot of inherited information about how the body builds itself. Scientists can compare the DNA of two organisms; the more similar the DNA, the more closely related the organisms.
Are bats and butterflies related?
The ancient last common ancestor of the butterfly and the bat had nothing like wings. This tells us that the wings of the butterfly and the wings of the bat evolved independently, long after their ancestral lineages diverged from the gastrula-like ancestor.
Do penguins and dolphins have a common ancestor?
– Dolphins and Penguins are not closely related to each other but evolved similar traits(flippers) which represent convergent evolution but developed from different lineages.
What are the 5 evidence of evolution?
Five types of evidence for evolution are discussed in this section: ancient organism remains, fossil layers, similarities among organisms alive today, similarities in DNA, and similarities of embryos.
Is a shark fin homologous?
Analogous structures are similar structures in unrelated organisms. These structures are similar because they do the same job, not because they share common ancestry. For example, dolphins and sharks both have fins, even though they aren’t related. Both species developed fins because of how (and where) they live.
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Are bats and birds related?
The link between birds and bats isn’t in their ancestry, but in their lifestyles. Birds and bats are vastly different and only distantly related, but they both independently evolved the ability to fly.
Are ducks and crocodiles related?
Modern species share a common ancestor, but are neither descended from each other nor from some crude composite chimera, and ducks are not descended from crocodiles.
How much DNA do we share with platypus?
In their investigation of the platypus genetic blueprint, the scientists found that its genome contains about 18,500 genes, similar to other vertebrates and about two-thirds the size of the human genome. The platypus shares 82 percent of its genes with the human, mouse, dog, opossum and chicken.
Can a shark and a dolphin have babies?
Shark-dolphin hybrids are impossible. It’s true that sharks and dolphins look similar in many ways, but that’s because they are a product of convergent evolution, where two genetically distant animals who live similar lifestyles start to look and act in similar ways. But sharks are fish and dolphins are mammals.
Why are sharks scared of dolphins?
Dolphins are mammals that live in pods and are very clever. They know how to protect themselves. When they see an aggressive shark, they immediately attack it with the whole pod. This is why sharks avoid pods with many dolphins.
Which organism is most closely related to sharks?
Sharks, skates, rays and chimaeras are closely related, and belong to the class of vertebrates known as Chondrichthyes. They differ from other fish in that their skeletons are made of cartilage (the same flexible material in human noses and ears), not bones.
Can dolphins evolve into fish?
It is extremely unlikely that dolphins will ever evolve gills; at least not for several million years. In fact it took the ancestors of dolphins millions of years to evolve from land dwelling animals into the marine mammals we now know today.
What did sharks look like millions of years ago?
The first recognisable sharks
By the middle of the Devonian (380 million years ago), the genus Antarctilamna had appeared, looking more like eels than sharks.
Why do whales and sharks look similar?
Fusiform Body Shape
In fact, a fusiform body shape is one of the most noticeable similarities between whales and sharks. Having a fusiform body shape, which is tapered and torpedo-like, helps these animals move through the water in the most efficient way possible.
Can you say that the bird and the butterfly might belong to a common ancestral group explain your answer?
No, the bird has bones inside of its wing the butterfly does not. They are not closely related. Vestigial Structures: Gradual changes have occurred through time that have in some cases reduced or removed the function of some body structures and organs.
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What is the most important piece of evidence for evolution?
Similar DNA sequences are the strongest evidence for evolution from a common ancestor.
Why are bat wings homologous to the front legs of cats?
Bat wings are homologous to the front legs of cats. What does the term “homologous” mean in this context? The common ancestor of bats and cats had a limb with a bone structure similar to that found in cat legs and bat wings.
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