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Aleksandr-060686 [28]
3 years ago
8

A study was conducted in a nursing home to examine the association of hand-washing and Gastroenteritis. Residents with the disea

se were recruited and others from the nursing home without the disease were subsequently selected. This kind of study is known as:
Biology
1 answer:
cupoosta [38]3 years ago
4 0

Answer:

The correct answer is case control study.

Explanation:

A study in which a comparison is made between the patients carrying the disease with the patients not carrying the disease is known as the case-control study. In the mentioned study, the one carrying the disease is termed as cases, and the one that does not possess the disease is termed as controls.  

This form of study is generally done to predict the association between the disease and the risk factor. In case-control studies, only observation is done as no attempt is made to change the course of the condition. The prime objective of the study is to predict the exposure of the risk elements for the individuals present in two groups, that is, controls and cases. This form of study is also called case-referent studies or retrospective studies.  

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In the year 2500, five male space colonists and five female space colonists (all unrelated to each other) settle on an uninhabit
iris [78.8K]

Answer:

The correct answer is genetic drift.

Explanation:

The phenomenon of changing the frequency of an allele in a specific population with time is known as genetic drift. The mentioned gene variation or the modification in the frequency of the allele is required to take place abruptly so that the phenomenon of genetic drift can take place. The environmental factors do not play an essential role in the phenomenon of genetic drift to take place.  

The process of genetic drift occurs generally due to random sampling of organisms, it illustrates the random change in the number of gene variants within a population. When the existence of the different forms of a gene, that is, alleles, enhances or reduces by chance with time within a population, the phenomenon of genetic drift occurs. Thus, the mentioned case is an illustration of genetic drift.  

7 0
3 years ago
What is biodiversity? ​
Flauer [41]

Answer:

Biodiversity is the variety of life. Most people recognize biodiversity by species a group of individual living organisms that can interbreed. Examples of species include blue whales, white tailed deer, white pine trees, sunflowers, and microscopic bacteria that can't even be seen by the naked eye.

Explanation:

plz give me brainliest :) have a good day

3 0
2 years ago
A red-tailed hawk swoops down and captures a young rabbit feeding on dandelions growing in a park. the relationship between the
Rudiy27
The hawk, a carnivore (animal meat-eater), is predating on the rabbit, an herbivore (plant-eater). So the hawk can be seen as the predator and the rabbit as the prey.
But another type of relationship important in Ecology is consumers. So producers are the plants that feed a food web. That makes the rabbits the primary consumers (herbivores) of these plants. Then the hawks become the secondary consumers (carnivores) of the primary consumers, by eating the herbivores.
Hope that this makes sense!
4 0
3 years ago
Howard is explaining the process by which DNA determines the structure of proteins. His explanation includes this statement. "Th
andrew-mc [135]

Answer:

Transcription and RNA processing (splicing)

Explanation:

Although Howard is almost right, the DNA sequence does not precisely relate to the protein sequence. First of all, the DNA is transcribed to an primary mRNA molecule. Bur before the mRNA is ready to be translated into an amino acid sequence, it must be processed into a mature mRNA.

This includes adding a 3' poly A tail, and a 5' cap, and importantly for this question, splicing.

Splicing is the removal of non protein coding intermediate sequences called introns from the protein coding regions (exons) of a primary mRNA. This means that lots of the DNA sequence is not dictated by the final protein, as many of the intervening sequences have been removed by splicing.

8 0
2 years ago
Why were the Smith and Cuvier discoveries that similar groups of fossils in distant rock layers could be correlated such a major
tamaranim1 [39]
This was a major breakthrough in geology because it meant that sedimentary strata in diverse parts of a country or area could be correlated as belonging to the same formation which means they were formed at the same time historically so helped to put them in the correct sequence. If these strata contained valuable minerals like coal then it could aid in the search for coal. This helped William 'Strata' Smith in England to create his first geological map in the world of a whole country.
7 0
3 years ago
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