In Neurospora, a cross was made: ab x ++; and 100 asci were scored and placed into theseven possible classes as shown below:Class: 1 2 3 4 5 6 7ab a+ ab ab ab a+a+ab a+ a++b+++b+b+++b+++++++b+++++b +b a+ ab a+ ab69 0 10 17 112a. Determine whether these genes are on the same chromosome or differentchromosomes. Why?b. If linked on the same chromosome are they on the same or opposite arms. Why?c. Determine the map distance between genes (if linked), and between the genes and their respective centromeres. (Show your work, but answer the question with a map)

Answered: In Neuros seven possib Class: 1 2 3 4…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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In Neurospora, a cross was made: ab x ++; and 100 asci were scored and placed into the
seven possible classes as shown below:
Class: 1 2 3 4 5 6 7
ab a+ ab ab ab a+a+
ab a+ a++b+++b+b
+++b+++++++b++
+++b +b a+ ab a+ ab
69 0 10 17 112
a. Determine whether these genes are on the same chromosome or different
chromosomes. Why?
b. If linked on the same chromosome are they on the same or opposite arms. Why?
c. Determine the map distance between genes (if linked), and between the genes and their

Expert Solution

Step 1: Introduction

Linkage describes how closely genes or other DNA sequences are located to one another on the same chromosome. The probability that two genes or sequences will be inherited together increases with their proximity on a chromosome.

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