AP_1 cross is set between true breeding producing white flowers. All F_1 have re
ID: 161990 • Letter: A
Question
AP_1 cross is set between true breeding producing white flowers. All F_1 have red flowers, while F_2 resulted up flower plants. plants in 580 red and 220 white How many alleles determine the phenotypes?______ The df _____ If x^2 = 2.667, then the corresponding p value is _____ > p > ______ Based on the values, is there a statically significant difference between the expected and observed data sets? Justify the answer provided in Essay Discuss the inheritance pattern of X-linked recessive genes in Drosophila. Name and describe explain the pattern Write out the specific crosses and their offspring illustrating this concept (P1. F1 F2). Clearly explain the allele symbols you choose Allele symbols:P1 cross:_____ F2: ______ Provide a explanation of what a gene is.Explanation / Answer
1).
Assume that the gene coding for re eyes is R and the gene coding for white eyes is r; R is dominant over r.
RR* rr --à Rr (100% red) --à F1
Rr* Rr ----à R_ (3/4, red), rr (1/4, white) --à F2
The phenotypic ratio of F2 is, 3:1
A). The two alleles R and r determine the phenotype.
B). There are two phenotypes. Thus, the degrees of freedom is = n-1 = 2-1 = 1
C). If the Chi-square is 2.667, the corresponding P value is, 0.102449.
D). The result is not significant at p < 0.05.