Chapter 25, Problem 18P

$\left(\text{a}\right)$

Summary Introduction

To determine: The point where Holliday intermediate has to be cleaved to generate a chromosome that will carry an $\text{Ab}$ genotype.

Introduction:

Holliday intermediates are formed at the site of recombination where the exchange of genetic elements takes place to form new recombination of genes in the progeny. It takes place during the process of crossing-over event.

$\left(\text{b}\right)$

Summary Introduction

To determine: The point where Holliday intermediate has to be cleaved to generate a chromosome that will carry an $\text{ab}$ genotype.

Introduction:

Holliday intermediates are segments of chromosomes formed during the stages of crossing over at junctional points on the sister chromatids of the homologous chromosomes.