Introduction to Genetic Analysis 519

Introduction to Genetic Analysis 519 - 518 Chapter 15...

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: 518 Chapter 15 Large-Scale Chromosomal Changes Draw diagrams to interpret these observations phy- logenetically, clearly indicating the relationships between the species. How would you go about proving that your interpretation is correct? (Problem 50 is adapted from A. M. Srb, R. D. Owen, and R. S. Edgar, General Genetics, 2d ed. W. H. Freeman and Company, 1965.) 51. There are six main species in the Brassica genus: B. carinata, B. campestris, B. nigra, B. oleracea, B. juncea, and B. napus. You can deduce the interrelationships between these six species from the following table: a. What types of linear asci (see Chapter 4) do you predict, and in what frequencies, in a normal cross of un-3 ad-3 3 wild type? (Specify genotypes of spores in the asci.) b. Most of the time such crosses behave predictably, but in one case, a standard un-3 ad-3 strain was crossed with a wild type isolated from a field of sug- arcane in Hawaii. The results follow: un-3 ad-3 un-3 ad-3 un-3 ad-3 un-3 ad-3 un-3...
View Full Document

Ask a homework question - tutors are online