Morphological differences are abundant among many species. We make assumptions about why adaptations exist, but to understand whether a specific trait is a adaptive and why, researchers must create experiments that have all the following, EXCEPT: a. replication of each treatment to ensure reliability of results. b. experimental design that enables all full interpretation of differences. c. include control groups. d. hypotheses that are testable and falsifiable. e. exceedingly small sample sizes in each treatment grou

Morphological differences are abundant among many species. We make assumptions about why adaptations exist, but to understand whether a specific trait is a adaptive and why, researchers must create experiments that have all the following, EXCEPT: a. replication of each treatment to ensure reliability of results. b. experimental design that enables all full interpretation of differences. c. include control groups. d. hypotheses that are testable and falsifiable. e. exceedingly small sample sizes in each treatment grou

Nutrition Now

8th Edition

ISBN:9781337415408

Author:Brown

Publisher:Brown

Chapter3: Ways Of Knowing About Nutrition

Section: Chapter Questions

Problem 17RQ

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The diagram shows one possible evolutionary history based on genetic sequences from Schmidt's patients, Nurse Trahan and local controls. According to this diagram below, what conclusion would you draw? (a) (b) Schmidt's patient *** Trahan Local controls Local control Schmidt's patient Local control Local control Trahan Local control Local control
A. When Dr. Linda Fedigan conducted her studies on menopause, she collected data from the following sources: a. data collected on seven primate species. b. data collected on her studies of macaques. c. all of the above d. ethnographic data from traditional societies. B. several problems that may arise when geneticists undertake studies on indigenous persons without understanding their culture. Which of the following is one of these problems? a. People had samples taken without their knowledge, during surgeries. b. Samples were later used for other studies that were not authorized. c. Samples are being used to produce cures, but no money is given back. d. All of the above are true
Which evolutionary mechanisms (natural selection, mutation, genetic drift, or gene flow) would you need to understand to predict the success of genetically modified mosquitoes to: 1. Drive the mosquito population to extinction? 2. Replace the mosquito population with genetically modified mosquitoes that can not transmit malaria?
Which of the following statements about molecular markersare true?A. All molecular markers are segments of DNA that carryspecific genes.B. A molecular marker is a segment of DNA that is found at aspecific location in a genome.C. We can follow the transmission of a molecular marker byanalyzing the phenotype (i.e., the physical characteristics)of offspring.D. We can follow the transmission of molecular markers usingmolecular techniques such as gel electrophoresis.E. An STS is a molecular marker.
Which of the following is false? a. The color of a fruit fly's eyes is a trait. b. The instructions for producing a trait are found in a gene that controls the physical expression of that trait. c. A gene can have different alleles that can specify different traits, such as red or brown eye color. d. The trait is influenced by the gene, independent of the environment. e. By studying the patterns of traits over generations of an organism, the genetic composition of an organism can be deduced.
The legend from figure 1 includes all of the following information EXCEPT: a. the error bars represent the standard error b. the number of replicates (n) c. a brief explanation of the experiment design d. which pH level caused the greatest delay in egg laying egg laying time (h) 56- 54- 52- 50- 55 54 54 3.13 3.33 4.33 53 5.33 52 6.33 53 7.33 53.7 54 8.33 9.33 53.3 10.33 54 11.33 pH FIGURE 1 | Egg laying time in different pH environments. Thirty-five newly hatched L1 were cultured at specific pH medium. The earliest observed egg laying time on each plate was recorded. Error bars represent the standard error from three replicated experiments.
You have been put in charge of developing a breed of domesticated dog that lives to be 40 years old on average. You will need to brainstorm for several minutes on how you could extend the life of dogs. You should refer to the example of the fruit flies from lecture.As part of this project, the breeders will need to put together an informational brochure to hand out to veterinarians and prospective owners of the dogs, which discusses: first, how dogs' age will be extended, then, some of the potential consequences of having a pet that lives for such a long time. The brochure will need to inform prospective owners that these dogs may live 40 or more years. It should point out that someone who is 30+ years old may have to plan on care for the pet if it were to outlive him or her. Also, there will be more lifetime costs associated with these dogs simply because they live so long. These dogs may be prone to diseases that are not seen in dogs with shorter life spans. Finally, there may be…
The application of evolution to understanding disease is widespread and productive. What is the benefit of applying Darwinian principles to medical practice?
In their case-control study investigating the link between smoking and lung cancer, Doll and Hill selected controls who were similar to the cancer cases in a number of characteristics. This process of control selection is commonly known as a. Randomization b. Manipulation c. Matching d. Random selection
Please select the term that best exemplifies the definitions, descriptions, and examples detailed below. Each term may be used more than once! Alternate forms of the same gene; a. Homozygous dominant variants increase the level of genetic b. Genotype diversity observed between and within species c. Heterozygous The genetic composition of an individual; d. Allele for instance, tt (where "t" stands for e. Phenotype shortness) Susie is concerned because her genetic counselor informed her that she could pass the trait for cystic fibrosis along to her child. However, Susie appears "normal." We would describe Susie as having what genotype? + A monohybrid cross between two individuals with this genotype results in a 1:2:1 genotypic ratio among offspring in the F1 generation? + Physical or behavioral characteristics that are the result of gene expression
The fundamental axiom of preventive medicine suggests that: Select one: a. We should screen the population to identify those with only slightly abnormal values (e.g. blood pressure) and then treat those individuals preventatively. O O b. We should screen the population to identify those with highly abnormal values (e.g. blood pressure) and then treat only those individuals. C. We should screen the population to identify those with only slightly abnormal values (e.g. blood pressure) and then only treat those individuals who show symptoms of disease. d. We should not screen the population and identify those with highly abnormal values (e.g. blood pressure) as they become sick and then treat only those individuals.
If I set up a Chi square analysis and determine that I cannot reject the null hypothesis based on my data, but the null hypothesis should be rejected, what kind of error is that? a. Type II error b. Type I error c. Conservative error

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	a.	replication of each treatment to ensure reliability of results.
	b.	experimental design that enables all full interpretation of differences.
	c.	include control groups.
	d.	hypotheses that are testable and falsifiable.
	e.	exceedingly small sample sizes in each treatment group.