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Marrrta [24]
3 years ago
5

Why does the oxygen atom in a water molecule have a negative charge?

Biology
1 answer:
zhannawk [14.2K]3 years ago
8 0

Answer: C

Explanation: Oxygen has negative ions.

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Two competing hypotheses to account for the increase in the number of Hox genes from the last common ancestor of bilaterians to
Tomtit [17]

Answer:

The duplication of a cluster of four Hox genes is equally likely as the duplication of a single Hox gene.

Explanation:

This comes from the definition of the parsimony principle, which is the action of choosing the simplest scientific explanation fitting the given evidence, meaning that all other elements are equal when evaluating the hypothesis. In biology the best hypothesis is the one that requires the fewest evolutionary changes.

Since three independent duplications of an individual Hox gene is in  evolutionary terms, more complex than a single duplication or a cluster, then that hypothesis would be the most parsimonious.

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A diseased cell is no longer able to produce proteins. Which cell structure is most likely malfunctioning?
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3 years ago
Which of the following provides the best summary of the process of natural<br> selection?
d1i1m1o1n [39]
The best summary of the process of natural selection will be provided bythe option D that is genes are always passed from parent to offspring . Hence , out four inheritance is one of the option in the given question that is gene are passed from parent to offspring .
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C. i took the test and i got it right
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