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sertanlavr [38]
3 years ago
12

Please help me will give a lot of points and likes and anything u want but please don’t guess worth 63 points

Biology
1 answer:
Zigmanuir [339]3 years ago
5 0
Number five is 1..... I think
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BRAINLIESTT<br> List and define four types of scientific models.
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Answer:

1. Physical models: smaller and simpler representations of the thing being studied. Eg. A globe or a map is a physical model of a portion or all of Earth.

2. Conceptual models: ties together many ideas to explain a phenomenon or event.

3. Mathematical models: sets of equations that take into account many factors to represent a phenomenon. Mathematical models are often done on computers.

4.  Mental models: personal and internal representations of external reality that people use to interact with the world around them. They are constructed by individuals based on their unique life experiences, perceptions, and understandings of the world.

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A molecule that can be used as a molecular clock has a neutral mutation rate of one mutation per 5 million years. How many years
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20 million years

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If we have a neutral mutation rate of one mutation per 5 million years, then the total of eight mutation between the two different species would be 20 million years. This is because both species will have 4 mutations in those 20 million years, so combined, both by 4, will have 8 mutations between them. So few mutations on so much time will result in two species that are very similar to each other even after 20 million years of evolution, even making them hardly distinguishable, especially if it comes to defining fossil records from them both. A nice example of this are the members of the felidae (cat) family, which are all very closely related, and are almost identical, thus making it extremely hard to distinguish two species of the same or similar size by their fossils.

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