You might have felt different from your family if you looked different. It could have been a sign that you were adopted as a child.

Our research shows that appearances can be deceiving. The family trees of plants and animals are being changed by new technology.

Humans are thought to be close relatives of bats because of similarities in our skeletons and brains. Rats and mice and rabbits are included in the group that we are now in. Bats are related to cows, horses, and even rhinoceroses than we are.

In order to work out the branches of the evolutionary tree of life, scientists had to look at the structure and appearance of animals and plants. According to similarities, life forms were grouped.

Scientists began using genetic data to build trees. The classical trees were at odds with many of the first trees.

Sloths and anteaters, armadillos, pangolins, and aardvarks were once thought to belong together in a group called edentates, since they share similar parts of their body.

There were different branches of the mammal tree that had the same trait. Aardvarks are more related to elephants than to cats and dogs.

Coming together

The line of evidence was familiar to Darwin and his peers. Animals and plants that looked similar were often found close together. The location of species is a strong indicator that they are related.

For the first time, we have cross-referenced a range of animals and plants. We looked at evolutionary trees based on appearance or molecule for 48 groups of animals and plants.

Evolutionary trees are more likely to match the location of the species compared to traditional evolution maps. Several species were related according to appearance.

They were found to be less likely to live near each other than species with the same genes.

It may appear that evolution is always inventing new solutions. You might think that it has more tricks up its sleeves.

Animals can look similar because they have evolved to do the same job. Birds, bats, and the extinct pterosaurs all have front legs for walking on the ground, unlike their ancestors who had back legs for flying.

(Oyston et al., Communication Biology, 2022)

The key and color wheels show where each order's members are located. The groupings of the colors in the tree indicate closer agreement of the molecule to biogeography.

The physics of generating thrust and lift in air are the same as in the past. It's the same with eyes, which may have evolved 40 times in animals, and with only a few basic designs.

Our eyes have many of the same features as squid's eyes. We're more related to clams than to squid. Many of their relatives have the simplest of eyes.

At least four times, mole's evolved as blind, burrowing creatures on different continents. The Australian pouched moles, African golden moles, African mole rats, and the Eurasian and North American talpid moles are related to many animals.

Evolution's roots

Evolutionary biologists used to only have to worry about appearance until the advent of cheap and efficient genes.

Darwin didn't map out the branches of the evolutionary tree that he showed all life is related to. One of the first people to draw evolutionary trees was an anatomist named Ernst Haeckel.

(Ernest Haeckel)

Living things influenced art and design in the 19th and 20th centuries. His family trees were mostly based on how the organisms looked when they were young.

There will be many more surprises as it becomes easier and cheaper to get and analyze large volumes of data.

Matthew Wills is a professor of evolutionary paleobiology at the University of Bath.

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