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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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Frameshift mutations ____________.
castortr0y [4]

Answer:

The correct answer is option b. "cause a change in the reading frame of mRNA codons".

Explanation:

Frameshift mutations are among the most drastic mutations because in most cases, result in the translation of a completely different protein. Frameshift mutations are the result of insertions or deletion of one or more nucleotides, resulting in a change in the reading frame of mRNA codons. In consequence, the ribosome translates a different amino acid sequence, based on the new reading frame of mRNA codons.

4 0
4 years ago
Explain the method scientest use to study how Earth's atmosphere and climate have changed during the past million years. (brainl
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7 0
3 years ago
Plants and fish live in this lake in Pennsylvania. The same plants and fish do not live in lakes found in Florida or Arizona. Wh
lana [24]

<em>the water temperature </em>

3 0
4 years ago
"stress triggered by pleasant stressors is called distress. <br> a. True <br> b. False"
leva [86]
The answer is false.

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<span>
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3 0
3 years ago
What are the coding segments of a stretch of eukaryotic dna called?
Vladimir79 [104]

Answer:

Exons

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