Formulas Data Review View Cut Copy Format Calibri (Body) ,112 ,11A- :EPwrap Text
ID: 215240 • Letter: F
Question
Formulas Data Review View Cut Copy Format Calibri (Body) ,112 ,11A- :EPwrap Text General Blyditund, A. Merge & Center, $ -% , : Conditional Formatting as Tat 2 Single Trait Two Traits Obs-Exp Obs Obs Exp Exp Purple Round 56.25 18.75 Yellow Round 18.75 4 Purple 75 78 0.12 0.36 X42 Value:0.48 3.841 s Yellow 25 21 5.06 23 18.06 0.96 625 0.75 Supported?yes X2 Vaue: 2.01 7.815 11 Use these headings to help count your corn kernels. Remember the sum function to help you calculate! 12 13 Monohybrid Count 14 Purple: Yellow: 15 Dihybrid Count: Purple Purple Yellow Round Wrinkled Round Test Cross Count: Purple:White: Wrinkded 78 50 21 17 21 23 25 28Explanation / Answer
Answer 1:
The null and alternative hypothesis of Mendel's experiment:
Null hypothesis defines that there is no relationship between two measured phenomena, Rejecting or disproving the null hypothesis—and thus concluding that there are grounds for believing that there is a relationship between two phenomena (e.g. that a potential treatment has a measurable effect)—is a central task in the modern practice of science; the field of statistics gives precise criteria for rejecting a null hypothesis.
The null hypothesis and the alternate hypothesis are types of conjectures used in statistical tests, which are formal methods of reaching conclusions or making decisions on the basis of data. The hypotheses are conjectures about a statistical model of the population, which are based on a sample of the population. The tests are core elements of statistical inference, heavily used in the interpretation of scientific experimental data, to separate scientific claims from statistical noise.
The statement being tested in a test of statistical significance is called the null hypothesis. The test of significance is designed to assess the strength of the evidence against the null hypothesis. Usually, the null hypothesis is a statement of 'no effect' or 'no difference'. It is often symbolized as H0.
The statement that is being tested against the null hypothesis is the alternative hypothesis. Symbols include H1 and Ha.
Statistical significance test: "Very roughly, the procedure for deciding goes like this: Take a random sample of the population. If the sample data are consistent with the null hypothesis, then do not reject the null hypothesis; if the sample data are inconsistent with the null hypothesis, then reject the null hypothesis and conclude that the alternative hypothesis is true.
Answer 2:
Chi-squared value:
The chi-square test is designed to test the statistical significance of an experimental outcome.
Monohybrid cross:
The cob bears fruit (the seeds) which are either purple or yellow in color. The color of the corn fruit is inherited in exactly the same way as the color of the flowers on Mendel's peas. The cob above was taken from a corn plant which was a F2 plant resulting from an original parental cross between a homozygous purple fruit plant and a homozygous yellow fruit plant. The allele A(purple) is dominant over the recessive allele a (yellow).
Answer4:
The chi-square test is designed to test the statistical significance of an experimental outcome
Dihybrid cross is a cross between two different lines/genes that differ in two observed traits. In the Mendelian sense, between the alleles of both these loci there is a relationship of complete dominance - recessive. In the example pictured to the right, RRYY/rryy parents result in F1 offspring that are heterozygous for both R and Y (RrYy).[1]
In the name "Dihybrid cross", the "di" indicates that there are two traits involved (e.g. R and Y), the "hybrid" means that each trait has two different alleles (e.g. R and r, or Y and y), and "cross" means that there are two individuals (usually a mother and father) who are combining or "crossing" their genetic information.
The Dihybrid cross is easy to visualize using a Punnett square of dimensions 4 x 4:
The rules of meiosis, as they apply to the dihybrid, are codified in Mendel's first law and Mendel's second law, which are also called the Law of Segregation and the Law of Independent Assortment, respectively.
For genes on separate chromosomes, each allele pair showed independent segregation. If the first filial generation (F1 generation) produces four identical offspring, the second filial generation, which occurs by crossing the members of the first filial generation, shows a phenotypic (appearance) ratio of 9:3:3:1, where:
RY Ry rY ry RY RRYY RRYy RrYY RrYy Ry RRYy RRyy RrYy Rryy rY RrYY RrYy rrYY rrYy ry RrYy Rryy rrYy rryy