Chapter 7.2, Problem 20AQP

a.

Summary Introduction

To determine:

The recombinant and non recombinant progeny from the total progeny.

b.

Summary Introduction

To determine:

The recombination frequency between the “$\text{es}\text{and}\text{St}$”.

Introduction:

Three individual determined that eyespot in the flour beetles is caused by the X-linked alleles $\left(\text{es}\right)$ and that is recessive to the allele $\left({\text{es}}^{\text{+}}\right)$, absence of eyespot. Then they had done some crosses to estimate the distance between the X-linked gene for the eye spot between striped gene $\left(\text{St}\right)$ that causes white stripes to female and is a recessive lethal gene.

c.

Summary Introduction

To determine:

The missing genotypes among the progeny of cross if so which ones and why.

Introduction:

Three individual determined that eyespot in the flour beetles is caused by the X-linked alleles $\left(\text{es}\right)$ and that is recessive to the allele $\left({\text{es}}^{\text{+}}\right)$, absence of eyespot. Then they had done some crosses to estimate the distance between the X-linked gene for the eye spot between striped gene $\left(\text{St}\right)$ that causes white stripes ob female and is a recessive lethal gene.