Question

Question 12 Not yet answered Points out of 2.00 P Flag question Two strains (A/A. B/B x a/a . b/b) were crossed and the offspring were test crossed to yield: A.B 70 parental genotypes a.b 62 parental genotypes A.b 30 recombinant genotypes a.B 38 recombinant genotypes You are interested in using the Chi Square test to examine the null hypothesis that A and B assort independently. Assume one degree of freedom (df), and an acceptable probability of 5% (0.05) What is your conclusion about A and B? Select one: a. they are on the same chromosome and assort independently b. they are on the same chromosome and do not assort independently c. they are on different chromosomes and they assort independently 0 d. they are on different chromosomes and they are linked 0 e. not enough information to decide Can you calculate the distance between A and B? Question 13 Not yet answered Points out of 2.00 P Flag question Select one: O a. Yes, they are 68 map units apart b. No, these two genes are on different chromosomes c. No, these two genes are on the same chromosome O d. Yes, they are 34 map units apart e. This is not possible with the data shown

Answer 1

50 12) Test cross expected ratio (H!1!1!1) - for independent assortment Genoty be observed o Exbecked 6 0 -046 AB TO 50 .: 8.0 ab 62 50 2.88. Ab 8.0 9B 50 2.88 TE=200 TX? 21.76] DOF = -) 143 At boo.os tabular value is 7.814 and our calculated value higher than fabular value.. Hence, @ they are m different chromosome and liv 13) Distance blu A and B .-307003JX100% O yes, they are 34 mab unit . = 84% or 34 CM. apart