Introduction to Genetic Analysis 70

Introduction to Genetic Analysis 70 - 69 Problems the F 1...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 69 Problems the F 1 progeny are purple. The F 1 plants are selfed and 400 F 2 plants obtained. Of these, 320 are purple and 80 are blue. Use the chi-square test to deter- mine if these results fit her hypothesis. 39. From a presumed testcross A/a 3 a/a , in which A 5 red and a 5 white, use the chi-square test to find out which of the following possible results would fit the expectations: a. 120 red, 100 white b. 5000 red, 5400 white c. 500 red, 540 white d. 50 red, 54 white 40. A presumed dihybrid in Drosophila B/b ; F/f is test- crossed to b/b ; f/f . ( B 5 black body; b 5 brown body; F 5 forked bristles; f 5 unforked bristles.) The results were Black, forked 230 Black, unforked 210 Brown, forked 240 Brown, unforked 250 Use the chi-square test to determine if these results fit the results expected from testcrossing the hy- pothesized dihybrid. 41. Are the progeny numbers below consistent with the results expected from selfing a plant presumed to be a dihybrid of two independently assorting genes,...
View Full Document

This note was uploaded on 01/10/2011 for the course BIOL BIOL taught by Professor Johnson during the Spring '08 term at Aberystwyth University.

Ask a homework question - tutors are online