C) is dominant over an allele for white flowers (c). At an independenthy assorti
ID: 255569 • Letter: C
Question
C) is dominant over an allele for white flowers (c). At an independenthy assorting locus, an allele for entire petals (F) is for yellow and entire petals is crossed with a plant that is white and fringed. A resulting Fi plant is then crossed with a s. (Problem 41a and 41b)In the Cad dominant over an allele for fringed petals (0. A plant that is homorygous clant that is white and fringed, and the following progeny are produced: 54 yellow and entire, 58 yellow and fringed, 53 white and entire, and 10 white and fringed. Using a chi-square test to compare the observed numbers with those expected for the cross, what can you conclude in regard to whether the ratios observed occurred due to random variations? with four degrees of freedom, the chi-square value is greater than 14.860 for a probability value of less than 0.00s, so the deviation between observed and expected was lkely to occur by chance. 0 with four degrees of freedom, the chi-square value is greater than 14.860 for a probability value of less than 0.005, so the deviation between observed and expected was not likely to occur 0 with three degres of freedom, the chi-square value is greater than 12.838 for a probability value of less than 0.005, so the deviation between observed and expected was likely to occur by o with by chance chance by chance. a probability value of less than 0.005, so the deviation between observed and expected was not likely to occur The determination cannot be made with the information given.Explanation / Answer
The degrees of freedom is given by the number of possible outcomes. In this case we have four such outcomes:
Yellow flowers, Entire petals
Yellow flowers, Fringed petals
White flowers, Entire petals
White flowers, Fringed petals
Hence, the degrees of freedom is 4
We are left with the first two answer choices now.
When the chi-square value is greater than the value displayed for the appropriate probabilty value, it is ALWAYS an indicator of the fact that the deviation between observed and expected was not likely to occur by chance.
Hence, the right option is:
With four degrees of freedom, the chi-square value is greater than 14.860 for a probabilty value of 0.005, so the deviation between observed and expected was not likely to occur by chance.
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