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wlad13 [49]
3 years ago
14

To apply parsimony to constructing a phylogenetic tree,

Biology
1 answer:
stiv31 [10]3 years ago
5 0

Answer:

D) choose the tree that represents the fewest evolutionary changes, either in DNA sequences or morphology.

Explanation:

Parsimony is a concept applied while constructing a phylogenetic tree. According to it the best tree is constructed by fewest evolutionary changes, either in DNA sequence or morphology. Complicated changes should be present as less as possible in a tree.

For example, suppose vertebrate relationship can be explained using two trees. Tree A has six evolutionary changes and evolution of bony skeleton occurs once. Tree B has seven evolutionary changes and evolution of bony skeleton occurs twice at different spots. Tree A will be preferred because it explains the vertebrate relationship in a less complicated way than Tree B.

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Explanation:

In mutualism, both organisms benefit.

<em>Ex</em>. Sea anemone and clownfish. Clownfish gives the anemone food, the anemone allows the clownfish to use it as a home.

In commensalism, one organism benefits, while the other is neither harmed nor benefited.

<em>Ex</em>. Sharks or whales and remora fish. The remora rides along the belly of whales or sharks and when it eats, the pieces that float around, the remora eats the excess.

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Mutualism and commensalism are similar because at least one organism is benefited.

Parasitism and commensalism are different because instead of one organism not getting hurt, like in commensalism, that happens in parasitism.

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A situation in which a hormone exaggerates the effects of another hormone at the target cell is called: synergism.

<h3>What is synergism?</h3>

Synergism can be defined as a biological process that typically occurs when two or more hormones produces the same effects of another hormone at the target cell and their combined effects are exaggerated.

Consequently, each of these hormone would act independently of another hormone while having the same effect on the target cell during the synergism of hormones.

Read more on hormones here: brainly.com/question/9474822

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New information about the genetics of species is being discovered.

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