Among the most frequently used species identification methods are: The evolutionary relationships between the unknown sequence and a set of known standard sequences are estimated using phylogenetic trees.
<h3>What is a phylogenetic tree?</h3>
Among the most commonly used species identification methods are: The evolutionary relationships between the unknown sequence and a set of known reference sequences are estimated using phylogenetic trees.
A phylogenetic tree is a diagram that depicts the evolutionary relationships between organisms or groups of organisms.
Scientists consider phylogenetic trees to be evolutionary hypotheses because the proposed relationships cannot be confirmed in the past.
Thus, every individual of same species are related to each other, so scientists can analyze another specimen from the same species.
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Answer:
a. a portion of the population becomes isolated from the remainder of the population and experiences different selective pressures
Explanation:
This is an example of allopatric speciation Allopatric speciation is a form of speciation (formation of new species) that occurs as a result of geographic isolation. This means that a part of population becomes physically separated from the initial main population. There is no gene flow between these two populations and as a result the two populations reach a high level of genetic divergence. They can no longer interbreed which means they become two different species (speciation).
New populations evolve as result of mutation, genetic drift and natural selection.
For example, Galapagos finches are isolated from others by the ocean (geographic isolation). Because of the isolation, the finches don’t breed with one another. So, they developed unique characteristics and became endemic.
Answer:
A. fibrous, cartilaginous, and synovial.
Explanation:
hope this helps!
The population(s) would be hurt if bears were added as bears are omnivores.
<h3>How do bears get the strength vitamins they need?</h3>
Plant ingredients make up the bulk of a bear's diet – every so often as plenty as ninety consistent with cent. However, fish and meat are vital reassets of protein and fat, aleven though maximum non-coastal bears depend upon carrion (along with winter-killed animals
- The maximum usually eaten styles of flowers are fleshy roots, fruits, berries, grasses, and forbs. If bears are at the hunt, their prey can consist of fish (particularly salmon), rodents like floor squirrels, carrion, and hoofed animals like moose, elk, caribou, and deer.
- They are particularly exact at catching the younger of those hoofed species. Grizzly bears also can goal home animals like farm animals and sheep and reason economically vital losses for a few ranchers.
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