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galben [10]
2 years ago
12

A 20.0 gram sample of a certain radioisotope decays over a

Biology
1 answer:
VLD [36.1K]2 years ago
5 0

quantity of the substance remaining = initial quantity of the substance * (.5)^(time elapsed/half life of the substance)

2.50 = 20 * (.5)^(19.2/x)

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Every HIV particle contains two RNA molecules. If two genes from one RNA moleculebecome detached and then, as a unit, get attach
natita [175]

Answer:

One of the RNA molecules has experienced gene duplication as the result of translocation.

Explanation:

Translocation and duplication are some of the structural abnormalities in the chromosomes that may even cause certain genetic disorders. Duplication is the presence of a genetic segment for more than one time in the chromosome. The repeated genetic segments are mostly present in the tandem pattern. When a chromosome fragment breaks off and attaches to a non-homologous chromosome, it is called translocation. It leads to the deletion of a genetic segment in one chromosome and duplication in the other.

According to the given information, a genetic segment bearing two genes is detached from one RNA and gets attached to the other RNA molecule of the HIV genome. Therefore, the RNA molecule has undergone translocation and has lost a genetic segment while the other has gained a genetic segment (duplication) due to translocation.

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3 years ago
36. how can you increase surface area but not volume of an object? biology
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Alexxandr [17]

Mitosis has five different stages: interphase, prophase, metaphase, anaphase and telophase. The process of cell division is only complete after cytokinesis, which takes place during anaphase and telophase. Each stage of mitosis is necessary for cell replication and division.

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asambeis [7]

Hey there!

The correct answer is False.

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Hope this helped and have a great day (:

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