Chapter 4, Problem 2PDT

(a)

Summary Introduction

To determine: Whether the mutations are non-random since they affect the cell from the environmental stresses.

Introduction: The variations caused by the genetic material of the organisms from a source or randomly are called “mutations”. The mutations affect the constant gene of a species and differentiated the part of the gene in a modified form known as “alleles”. The randomness in the mutation rate was shown by Lederberg in “replica plate experiment”. The minute changes in the “DNA fragment” caused the very new variations among the individuals which makes them different from each other. The mutations are the causative factor of variations in an individual to serve, the purpose of survival and reproduction which transmits from one generation to another.

(b)

Summary Introduction

To determine: The probability of adaptation by an increase in the rate of mutations.

Introduction: The variations caused by the genetic material of the organisms from a source or randomly are called “mutations”. The mutations affect the constant gene of a species and differentiated the part of the gene in a modified form known as “alleles”. The randomness in the mutation rate was shown by Lederberg in “replica plate experiment”. The minute changes in the “DNA fragment” caused the very new variations among the individuals which makes them different from each other. The mutations are the causative factor of variations in an individual to serve, the purpose of survival and reproduction which transmits from one generation to another.

(c)

Summary Introduction

To determine: The probability of changes in the cell by an increase in the rate of mutations.

Introduction: The variations caused by the genetic material of the organisms from a source or randomly are called “mutations”. The mutations affect the constant gene of a species and differentiated the part of the gene in a modified form known as “alleles”. The randomness in the mutation rate was shown by Lederberg in “replica plate experiment”. The minute changes in the “DNA fragment” caused the very new variations among the individuals which makes them different from each other. The mutations are the causative factor of variations in an individual to serve, the purpose of survival and reproduction which transmits from one generation to another.