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m_a_m_a [10]
4 years ago
15

Swine are vulnerable to infection by bird flu virus and human flu virus, which can both be present in an individual pig at the s

ame time. When this occurs, it is possible for genes from bird flu virus and human flu virus to be combined. If the human flu virus contributes a gene for Tamiflu resistance (Tamiflu is an antiviral drug) to the new virus, and if the new virus is introduced to an environment lacking Tamiflu, then what is most likely to occur?
Biology
1 answer:
Alex_Xolod [135]4 years ago
8 0

Answer:

<em>If the Tamiflu-resistance gene involves a cost, it will experience directional selection leading to reduction in its frequency.</em>

Explanation:

The new virus will be resistant to Tamiflu. The Tamiflu resistance gene will become common in the environment due to directional selection. Directional selection can be described as a condition in which one phenotype is favoured such that the phenotype becomes abundant in an area and hence the allele frequency of the area changes. This occurs because that phenotype is better adapted to survive in an environment.

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Pillbugs are placed in a container where they have a choice of a wet or a dry environment. Researchers record how much time was
alexdok [17]

Answer: Wet or dry environment.

Explanation:

<u>The independent variable is the variable that a researcher manipulates in an experiment in order to carry out a study on the incidence of the expression of the dependent variable.</u> Therefore, the independent variable is the one that changes or is controlled to see its effects on the dependent variable.

Researchers can then design a container with a wet or dry environment. But it's the pillbugs that are going to choose where to go and how long to spend in each part. So the time they spend in each part is a dependent variable since that cannot be controlled by the scientists conducting the experiment. Henceforth, the researches will just record this dependent variable without controlling it. But they can decide what to put in the container to make it wet or dry environment, or whatever they want to design. So wet or dry environment is the independent variable.

7 0
3 years ago
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Which of the following best describes a benefit of one type of non-renewable energy?
oksian1 [2.3K]

D

Unlike carbon-based fuels like coal, natural gas, and petroleum, nuclear energy does not release greenhouse gases into the atmosphere. Therefore it does not contribute to global warming.

Explanation:

Nonetheless, nuclear energy is not widely adopted for energy because of its safety concerns. Fission energy is harmful to the environment because of nuclear waste it generates. How this nuclear waste is stored is very important because leakage can lead to contamination of an environs with lethal radioactive elements.

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5 0
4 years ago
1. A population of rabbits may be brown (the dominant phenotype) or white (the recessive phenotype). Brown rabbits have the geno
bazaltina [42]

frequency of the dominant allele in the population ... 2pq = frequency of heterozygous individuals. A population of rabbits may be brown (the dominant phenotype) or white (the recessive phenotype). Brown rabbits have the genotype BB or Bb. White rabbits have the genotype bb.


6 0
3 years ago
Which structures in plant cells build protein molecules under the control of the nucleus?
IgorC [24]

Explanation:

<em>ribosomes </em><em>are </em><em>structures in plant which build protein molecules under the control of nucleus</em><em>.</em><em>.</em><em>.</em>

4 0
3 years ago
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A researcher claims that the epinephrine signaling pathway controls a catabolic process in muscle cells
denis-greek [22]

Answer:

Glycogen phosphorylase catalyzes the conversion of glycogen to glucose-1-phosphate.

Explanation:

Glycogen phosphorylase catalyzes glucose-1-phosphate release by phosphorolysis from the terminal residue of a non-reducing end of a glycogen branch. A molecule of inorganic phosphate attacks the C1 side of a α(14) glycosidic bond, leaving in the glycogen polymer a hydroxyl group on C4.

7 0
3 years ago
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