Genetic Analysis: An Integrated Approach (3rd Edition)
Genetic Analysis: An Integrated Approach (3rd Edition)
3rd Edition
ISBN: 9780134605173
Author: Mark F. Sanders, John L. Bowman
Publisher: PEARSON
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Chapter 5, Problem 17P
Summary Introduction

To analyze:

The expected frequency for given gametes (a to d) by referring to a table.

Dihybrid genotype Recombination frequency Gamete genotype
DE/de 8% De
AD/ad 28% ad
DEF/def E – F 24% D – E 8% dEf
BdE/bDe B - D 18% D – E 8% Bde

Introduction:

Recombination frequency is a measure of genetic linkage. It is used in creating a genetic linkage map. Recombination frequency (r) can be defined as the rate of occurrence of recombination between a pair of linked gene.

It can be calculated using this formula –

  r = Total number of recombinant

       Total number of progeny

According to the given problem, 1 map unit corresponds to 1% recombination.

Frequency of specific gamete formation can be calculated from the map of linked genes.

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Genetic Analysis: An Integrated Approach (3rd Edition)

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Mitochondrial mutations; Author: Useful Genetics;https://www.youtube.com/watch?v=GvgXe-3RJeU;License: CC-BY