A dihybrid AaBb plant is test crossed to aabb, and independent assortment predicts four equal classes. Among 400 progeny the classes are 112, 98, 95 and 95. The critical value of chi-square at the 5% level is 7.81 for 3 degrees of freedom and 9.49 for 4. Which conclusion is correct?

BiologyAdvancedHigh School (11–12)Heredity and Evolution › Heredity and Inheritance Olympiad

A dihybrid $AaBb$ plant is test crossed to $aabb$ , and independent assortment predicts four equal classes. Among 400 progeny the classes are 112, 98, 95 and 95. The critical value of chi-square at the $5\%$ level is $7.81$ for $3$ degrees of freedom and $9.49$ for $4$ . Which conclusion is correct?

← All Quizzes

← Three linked genes lie in the order P, Q, R. The map distance from P to Q is 10 cM and from Q to R is 20 cM. The interference between the two regions is 0.4. A heterozygote PQR/pqr is test crossed and 5000 progeny are counted. How many progeny are expected to be of the two parental types together?An enzyme obeys Michaelis-Menten kinetics. Its initial rate is 30 µmol min⁻¹ at a substrate concentration of 3 mM, and 40 µmol min⁻¹ at 6 mM. Which pair of constants fits both measurements? →

More onHeredity and Evolution › Heredity and Inheritance

Discussion (0)

Loading…

Discussion (0)

Problems on this topic