Why is the distribution of a quantitative trait that of a bell curve?
Why is the distribution of a quantitative trait that of a bell curve?
Homework Answers
Quantitative trait which is also called polygenic trait are controlled by more than two dominant gene. When two heterozygous individual breed for a polygenic inheritance the graph obtained in the form of bell shaped curve. The reason for getting such curve is that polygenic breeding gives all range of phenotype based on the number of dominant alleles present in the genotype. For example for three polygenes the phenotypic ratio obtained is 1:6:15:6:1 where 15 is the intermediate phenotype with maximum number and 1 is the extreme phenotype with none and maximum number of dominant alleles.
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Why is the distribution of a quantitative trait that of a bell
curve?
Each of the graphs represents the distribution of a quantitative, heritable trait. In each example, selection...
Each of the graphs represents the distribution of a quantitative, heritable trait. In each example, selection occurs that alters the position or shape of the normal distribution. The original distribution is labeled "Before selection. The distribution on which selection has acted is labeled "After selection." Frequency Trait value Trait value selection Frequency Trait value stabilizing disruptive directional
In a standard normal distribution bell curve, the proportion of the total area which must be...
In a standard normal distribution bell curve, the proportion of the total area which must be to the left of the mean is and the total area under the curve is A: between 0.25 and 0.60; 0.50 and 1.20 B: exactly 0.50; 1 C: less than 0.50 if the distribution is skewed to the left; 1 D: more than 0.50 if the distribution is skewed to the right; 1
3.3.128 Question Help The quantitative data set under consideration has roughly a bell-shaped distribution. Apply the...
3.3.128 Question Help The quantitative data set under consideration has roughly a bell-shaped distribution. Apply the empirical rule to answer the following question A quantitative data set of size 60 has mean 30 and standard deviation 3. Approximately how many observations lie between 21 and 397 Approximately observations lle between 21 and 39 (Round to the nearest whole number as needed.)
What does the symmetric bell shape of the normal curve imply about the distribution of individuals...
What does the symmetric bell shape of the normal curve imply about the distribution of individuals in a normal population? [2 sentences]
The population frequency distribution curve depicting the effect of a drug in which a single trait...
The population frequency distribution curve depicting the effect of a drug in which a single trait contributes to the observed phenotype will be unimodal-skewed, with no distinct differences among the genotypic groups. Group of answer choices True False
Why should the area under the Normal Curve (i.e., under the “bell”) always be 1.0?
Why should the area under the Normal Curve (i.e., under the “bell”) always be 1.0?
When graphing a distribution of phenotypes for a continuous trait, a broad curve implies Question 6...
When graphing a distribution of phenotypes for a continuous trait, a broad curve implies Question 6 options: little variation in the phenotypes. a large standard deviation. a small variance. a large correlation coefficient. zero regression line slope.
For a quantitative trait observed in the F2 generation, the number of individuals showing one of...
For a quantitative trait observed in the F2 generation, the number of individuals showing one of the extreme phenotypes was 11 out of a total of 704 F2 progeny. Therefore the number of genes pairs involved in controlling the trait being studied, under the given set of experimental conditions is:
For a quantitative trait observed in the F2 generation, the number of individuals showing one of...
For a quantitative trait observed in the F2 generation, the number of individuals showing one of the extreme phenotypes was 51 out of a total of 798 F2 progeny. Therefore the number of genes pairs involved in controlling the trait being studied, under the given set of experimental conditions is: A. 1 B. 2 C. 3 D. 4 E. 16 Please show working.
Grade percentages for STAT 302 students can be described using a bell-curve distribution with a mean...
Grade percentages for STAT 302 students can be described using a bell-curve distribution with a mean of 82.7% and a standard deviation of 5.3%. (a) Using the 68-95-99.7 rule, what percent of students have grade percentages that are at least 93.3%? How do you solve this? (correct answer is 2.5%) (b) Using the 68-95-99.7 rule, about 50% of students have grade percentages less than what percent? How do you solve this? (correct answer is 82.7%)
Each of the graphs represents the distribution of a quantitative, heritable trait. In each example, selection occurs that alters the position or shape of the normal distribution. The original distribution is labeled "Before selection. The distribution on which selection has acted is labeled "After selection." Frequency Trait value Trait value selection Frequency Trait value stabilizing disruptive directional
3.3.128 Question Help The quantitative data set under consideration has roughly a bell-shaped distribution. Apply the empirical rule to answer the following question A quantitative data set of size 60 has mean 30 and standard deviation 3. Approximately how many observations lie between 21 and 397 Approximately observations lle between 21 and 39 (Round to the nearest whole number as needed.)
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