Answer: the research study lacked a control group, It was difficult to know individuals who are not taking Vitamin C and exposed to cold
Explanation:
Normally in a research study there should be a control group of the same age group like the study group in the same environment, <u>who will not Vit, C but </u><u>a placebo. T</u><u>o determine if Vitamin. C is the actual effective drug for prevention of cold in the study group or other factors.</u>
Therefore, in this study It was difficult to know individuals who were not taking Vitamin C and exposed to cold(control group) Because, it is the comparison of the data from the control group and the study groups that is needed to determine the efficacy of Vitamin C
When selecting a vitamin-mineral supplement, one should be careful to choose one that has nutrient levels that are less or equal to the RDA, but not exceeding it. The supplement is designed to provide a variety of nutrients that are also found in food. They are often called multivitamins and come in form of chewable tablets, pills, liquids and powders.
Answer: If this population were in equilibrium and if the sickle-cell allele is recessive, the proportion of the population susceptible to sickle-cell anemia under typical conditions should be 0.20
Explanation: Hardy-Weinberg law provides an equation to relate genotype frequencies and allele frequencies in a randomly mating population. The equation is;
p² + 2pq + q² = 1
For 2 alleles such as A and a, where
p² = homozygous dominant
q² = homozygous recessive and
2pq = heterozygous
From the question, it is said that the sickle-cell allele (SS) constitutes 20% (that is, 20/100) of the hemoglobin alleles in the human gene pool and it is also said to be the homozygous recessive allele.
Therefore, q² = 20/100 = 0.20
Answer:
The answer is D.) Mercury
Answer:
D(an oxygen atom and two hydrogen atoms)
Explanation: