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Sloan [31]
3 years ago
14

Researchers found that attitudes regarding alcohol were somewhat different for 12-year-olds, 15-year- olds, and 17-year-olds. Al

l measures were taken during the same year from children of different ages. This type of research is an example of the research method called____________.
Social Studies
1 answer:
Ilia_Sergeevich [38]3 years ago
3 0

Answer:

This type of research is an example of the research method called cross-sectional research.

Explanation:

Cross-sectional research is a research design or method used in observational studies. The reseracher measures the dependent variable in different population groups at the same point in time. The population groups or cohorts are chosen depending on the research question, they can be based on age (like in the example in the question), gender or race, among other categories. Usually the outcomes are compared to one another.

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Answer:

b. FBX is a dominant allele.

Explanation:

If Darren's father has the gene for FBX and Darren's mother does not have this gene, but Darem has the disease, it means that the disease is encoded by a dominant allele.

We can draw that conclusion, because as we have seen, the alleles that Darren received from his mother and father responsible for bone development are different, so one is dominant and the other is recessive. Recessive genes are only expressed and homozygous, that is, Darren would only express the gene for bone development if both his father and mother donated recessive alleles.

On the other hand, dominant genes are expressed, even in the presence of a recessive gene. Therefore, we can say that the gene that Darren received from his father is dominant and was expressed even in the presence of the recessive gene, which Darren received from his mother.

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Liono4ka [1.6K]

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mars1129 [50]
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Effectus [21]

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