Which of these two hypotheses would you favour and why? To answer this, you will need to test the observed data against your predictions on both hypotheses by a chi-square test


write a 300 400 words article use quot first person quot perspectiveJuly 15, 2021

1. In a cross between two pure-breeding varieties of radish, one with red and the other with white roots, all the F1 progeny had purple roots. The F2 obtained by selfing the F1 segregated as follows: Red Purple 80222 White 98 Two models (A and B) were suggested to account for these results:- A) Root colour is controlled by a single gene with two alleles showing incomplete dominance B) Root colour is controlled by two unlinked genes showing (recessive) epistasis. With this hypothesis, the presence of pigment depends on a gene C while white roots are produced by its recessive allele, c. The second gene, R, controls the intensity of colour such that in the presence of C, the dominant allele R produces purple roots while the recessive allele, r, produces red roots. Which of these two hypotheses would you favour and why? To answer this, you will need to test the observed data against your predictions on both hypotheses by a chi-square test.

 

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