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Common ancestor

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Q: A species from which two or more species diverged?
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Continue Learning about Zoology

How do scientist estimate the number of nucleotide changes that have taken places in a gene since two species diverged from a common ancestor?

Both organisms' DNA is sequenced, and then compared to one another. The number of nucleotide changes is literally counted (though with a computer). It is an estimate because of genetic diversity within a species


Why is the description of synapomorphies important in the work of systematics?

The description of synapomorphies (A derived trait shared by two or more species that is believed to reflect their shared ancestry) is important in the work of systematics (taxonomy) because then the systematists can know how the two or more species is related.


Which class of creatures contains more than two thirds of all known species?

Insects and co.


How many birds are in the world?

There are approximately 10,000 bird species in the world. This number varies by a few hundred birds, depending on which classification system you use. Clements (now run by Cornell University) lists about 9,800 bird species whereas Sibley and IOU list over 10,000 species. As with most animal groupings, species are being redefined and what was considered to be one species may be split into two or more species, and in other cases. two species may be combined into one species. Clements is slow to make such changes. Splits and groupings of bird species happen regularly. It's even more common in butterflies and the taxonomy of moths is an even bigger mess! In the United States (including Hawaii) there are about 980 bird species, depending on the listing source.


How many snakes in the world are venomous?

Over 600 species are known to be venomous-about a quarter of all snake species.

Related questions

Two populations have evolved into two different species when what has happened?

They diverged enough so that they can't crossbreed.


What part of speech is diverged in this sentence Two paths diverged from the main road?

Diverged is a verb in the past tense.


How do rates of mutation power molecular clocks?

The number of neutral mutations distinguishing two species enables measurement of the length of time since the species diverged from a common ancestor.


Is diverged an adjective?

Yes, it can be (diverged paths, diverged concepts).But the more likely adjective to use would be divirgent.The word diverged is the past tense and past participle of the verb "to diverge."


Can you make a sentence using the word diverged?

there are two roads diverged while coming to our school.


How can you use diverged in a sentence?

Diverged means to move apart, to separate. Here are some sentences.The river diverged into two streams.Our paths diverged and we grew apart."Two roads diverged in a yellow wood, and I took the one less traveled." (from "The Road Not Taken," by Robert Frost)


What type of study is most appropriate for determining the time at which a common ancestor to humans and chimpanzees lived?

comparing DNA sequences between humans and chimpanzees Also,The more similar the DNA of two species, the more recently they diverged from a common ancestor


How polar bears evoled to girzzybrow bear?

Polar bears and brown bears are closely related. The two species diverged around 100,000 years ago.


Biologists use molecular clocks to try to measure?

Generally, a molecular clock is used to describe the rate of molecular change over time that tells you when two species, or taxa, have diverged.


Are Ursus arctos and Ursus maritimus related?

Yes. The brown and polar bears are very close relatives. The two species diverged within the last several hundred thousand years.


Are brown bears and polar bears members of the same species?

well polar bears have the same claws as brown bears but pandas don't have them so sharp


What does compairing a human hemoglobin protein with the same hemoglobin protein of other species can tell you about evolution?

When 2 concerned species diverged also called molecular clock .