The test that they can use in differentiating the gypsum and
quartz which are considered to be minerals is the mineral test. The mineral
test can differentiate the hardiness of the minerals, as well as their;
acidity, magnetism, streak, specific gravity and even their tenacity.
Answer:
In the study there was an experiment performed, with the experiment it was determined that twins who were separated at a young age, did not have a significant impact on their behavior. In the study scientists were surprised because the twins still had similar behaviors. That is because both twins inherited traits from their mom and dad. In the study I believe nature was more evident than nurture because even though the twins were separated they still had similar personalities. However, I do still believe that part of their personality will be influenced by their environment and the people they are surrounded.
In this study there were several research methods used. The psychologists used questionnaires to research how the twins traits and personalities develop. They also used observation, they observed the twins behaviors. But the patient and the observer could be influenced by what they are trying to discover, so this technique is biased. And they used case stud, the case studies would be the twins because they are the ones being observed and are the base of the experiment.
In one paragraph, describe the research methods used in this study and why you believe they were chosen. Be sure to use key terms such as cross-sectional research, longitudinal research, data collection, observation, case studies, questionnaires, and experimentation, as they apply. Your answer should include at least two of these key terms.
In one paragraph, discuss the research findings. Does the study support genetics (nature) or environment (nurture) as a stronger influence on human development? Use information from the article and the lesson to support your response.
Image by Tom Mooring
Answer: Although both are X-linked recessive conditions, and therefore more likely in males, with the single X-chromosome. The recessive allele in colour blindness occurs at a higher frequency in the population and is a mild condition. Thus colour blindness does occur to a lesser extent in females because it needs the double recessive condition. DMD is a severe, disabling condition with a limited lifespan, and recessive allele frequency much lower, so the double recessive condition in females is very rare.
Explanation: DMD is an X-linked recessive, “nearly always in males” suggest that it also occurs due to a new mutation or some rare condition e.g. double recessive from an affected father and carrier mother, or inactivation of the normal gene in a heterozygote. It is also found that the defective allele is not completely recessive and that female carriers may exhibit mild to moderate effects.
colour blindness is polygenic, although the genes are all X-linked. It is more common in males than females. Females can carry two recessive alleles and so express the phenotype, but this is uncommon because the frequency of the recessive gene is low.
There are similarities in that both are X-linked recessives, therefore commonly expressed in males, who only have one X chromosome. The gene frequency of the colour blindness recessive is much higher than that of DMD, so the double recessive condition, which affects females, is more likely to be seen with colour blindness. In addition, DMD is a severe condition associated with disability and limited lifespan, which reduces the probability of mating between an affected male and carrier female
