Essentials of Biology
Essentials of Biology
4th Edition
ISBN: 9780078024221
Author: Sylvia S. Mader Dr., Michael Windelspecht
Publisher: McGraw-Hill Education
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Chapter 15, Problem 1TC
Summary Introduction

(a) To explain:

How natural selection was responsible for the phenomenon happened at the second farm.

Introduction:

The term “natural selection” was given and popularized by Charles Darwin . Simply, it is defined as “survival of the fittest”. It is the differential survival of organisms on the basis of their phenotype and genotype. Natural selection is the key to evolution.

Summary Introduction

(b) To describe:

The form of selection occurring at the second farm.

Introduction:

Selection is a process that refers to the survival, growth, and reproduction of certain preferential genotypes. Selection could be natural or artificial.

Summary Introduction

(c) To identify:

The insects which are still in equilibrium.

Introduction:

Hardy-Weinberg principle is used to determine whether a population is in equilibrium or not. Hardy-Weinberg principle states that genetic variations in a population would remain constant if there are no external disturbing factors. Mathematically, it can be written as follows:

Essentials of Biology, Chapter 15, Problem 1TC , additional homework tip  1

Here, Essentials of Biology, Chapter 15, Problem 1TC , additional homework tip  2represents genotype frequencies of homozygotes AA.

Essentials of Biology, Chapter 15, Problem 1TC , additional homework tip  3represents genotype frequencies of homozygotes aa.

Essentials of Biology, Chapter 15, Problem 1TC , additional homework tip  4represents genotype frequencies of heterozygotes Aa.

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