Show work please On the planet Susru, there are three types of bears; those who

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Show work please

On the planet Susru, there are three types of bears; those who like honey-nut cheerios, those who like multi-grain, and those who like plain cheerios. The phenotype is determined in an epistatic way by two loci: HNNT, with alleles H (dominant) and h (recessive), and MLTGRN, with alleles M (dominant) and m (recessive) In a cross of a HHMM bear and an hhmm bear, and the Fls like honey-nut. A cross of two F1 bears produces the following sums two-locus genotype counts: All F2 bears with at least one H allele: 801 All F2 bears with at least one M allele but no H alleles: 200. What number of F2 bears with the hhmm genotype would produce an F2 data set that is consistent with a dominant mode of inheritance at the 1% level of significance (Hint: Think Chi-square)? O A. 55. O B. 37. O D. 90 E. 15

Explanation / Answer

Dominant mode of inheritance ratio is 12 : 3 : 1

12/16 = 0.75 = 75 % = 801 (Phenotype : Honey-nut and Genotype : HHMM, HhMM, HHMm, HhMm, Hhmm)

3/16 = 0.1875 = 18.75 % = 200 (Phenotype : Multigrain and Genotype : hhMM, hhMm)

If 75 % is 801, then 100 % is 1068

75 % = 801

100 % = ?

(100 x 801) / 75 = 1068

Therefore, (1/ 16) x 1068 = 67 (Expected) but observed is 55

Observed Expected Honey nut 801 801 Multigrain 200 200 Plain 55 67

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