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Does homologous mean that structures are similar due to having common ancestry?
homologous structures- same structure/different functions in common ancestors analogous structures-same functions/differnt structures not in common ancestors vestigial-show evolutionary history/structures that arent used anymore (i.e. human appendix/human tailbone)
These are physical features shared by organisms with common ancestry they may have the same structure but different functions developmentally mature organisms?
homologous structures
Plant and animal cells have certain structures in common they also have certain structures that are different Why?
They both evolved from the same multicellular organisms, so they have structures in common. But they did that a long time ago, so they have evolved different structures.
What does it mean if two different animals possess homologous structures?
Homologous structures are similar evolutionary structures that evolved in different organisms that were used for the same purpose long ago but are no longer in use
Does DNA look the same in all organisms?
a
What is an example of a vestigial structures?
A vestigial structure is part of an organism's anatomy that functioned in an ancestral species, but which is no longer present in the same size and does not serve the same purpose. In some instances, it is completely redundant. Examples of vestigial structures are the tailbone of a koala and the leg bone in a baleen whale. The appendix in a human being is often thought to be a vestigial structure, but recent research indicates the appendix may still perform a very useful purpose in the immune system.
What does the Latin root word seen in 'vestigial' mean?
The Latin root word "vestigium" in 'vestigial' means 'footprint' or 'trace'. In the context of biology, a vestigial structure refers to a body part that has reduced in size and function compared to the same body part in other organisms.
Does homologous mean that structures are similar due to having common ancestry?
homologous structures- same structure/different functions in common ancestors analogous structures-same functions/differnt structures not in common ancestors vestigial-show evolutionary history/structures that arent used anymore (i.e. human appendix/human tailbone)
Which organisms would most look alike?
Organisms in the same family
These are physical features shared by organisms with common ancestry they may have the same structure but different functions developmentally mature organisms?
homologous structures
Structures that taxonomists use to group organisms such as having the same bones of the forearm in humans and the front leg of a dog?
Those are referred to as homologous structures.
Why are vestigial structures considered critical evidence of evolution?
Vestigial structures are considered evidence, but no more critical than any other line of evidence in Biology and palaeontology. They're considered evidence, not because of their function, but because of the way their morphologies follow the nested hierarchies of biology: the vestigial legs of whales, for instance, have exactly the kind of shape we would have expected them to have if whales had descended from land mammals. The same goes for human tailbones and embryonic branchial ridges, the wings of emus, and so on.
Plant and animal cells have certain structures in common they also have certain structures that are different Why?
They both evolved from the same multicellular organisms, so they have structures in common. But they did that a long time ago, so they have evolved different structures.
What does it mean if two different animals possess homologous structures?
Homologous structures are similar evolutionary structures that evolved in different organisms that were used for the same purpose long ago but are no longer in use
Does DNA look the same in all organisms?
a
Structures that have similar structure and function but different evolutionary origins are called?
It is either homologous structures or homozygous structures. Embryological structures are when different species of animals look similar in the earliest stage of development and Analogous structures are when animals look different but their function is basically the same. So just look up homologous structures and homozygous structures in your Bio book!!
What structures look the same in different species?
Every animal has evolved to fit a niche in the environment. This require different shapes, diets, colour, skills and defenses. This accounts for the variety of appearance.
