Genetics and Breeding

Teacher

Dr. Amrutha Gopan

Category

Core Courses

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Course Name : Genetics and Breeding

Code(Credit) : FSAQ 2111(1-1-0)

Course Objectives

To discuss the important topics under genetics and breeding since a knowledge of genetics and breeding is essential for fishery science

Learning Outcomes

Have an enhanced knowledge of fish genetics and breeding

Understand how genetic manipulations affect fish breeding

Course Syllabus

Principles of genetics and breeding, Gene and chromosome as basis of inheritance, Mendel’s
law of inheritance – complete and incomplete dominance, monohybrid and dihybrid ratios.
Gene interactions – dominant and recessive epistasis. Pleiotropism. Lethal genes. Mutation.
Sex - linked genes, sex influenced and sex limited traits. Linkage and crossing over.
Introduction to population genetics. Hardy- Weinberg law and its significance. Chromosomal
structure and aberrations. Chromosome manipulation techniques - androgenesis, gynogenesis
and polyploidy and identification of ploidy. Sex determination. Cross breeding (hybridization)
– types of cross breeding, heterosis and design of cross breeding programmes, hybridization in
different fishes. Quantitative genetics – quantitative traits, polygenic traits, heritability.
History and present status of selective breeding programs in aquaculture. Selection methods
and mating designs. Design for selective breeding. Inbreeding and its consequences.
Domestication methods. Seed certification and quarantine procedures. Cryopreservation of
gametes.

Practicals

 Problems on Mendelian inheritance (qualitative genetics) - monohybrid and
dihybrid ratios and epistasis. Problems on quantitative traits, response to selection and
heritability. Estimation of rate of inbreeding and heterosis. Mitotic and meiotic chromosome
preparation. Demonstration of protocol of androgenesis, gynogenesis and polyploidy.
Problems on gene and genotypic frequency. Gamete cryopreservation protocols and quality
evaluation of fish milt.

Reference Books

1. Concept of genetics - Kotpal
2. Applied genetics -Padhi & Mondal
3. Fish Genetics & Biotechnology -W.S.Lakra

Session Plan

Session 1

Introduction to genetics

Principles of genetics and breeding

S 1.INTRODUCTION

Principles of genetics and breeding

 

Session 2

Gene and chromosome as basis of inheritance

Mendel’s law of inheritance

Complete and incomplete dominance

Monohybrid and dihybrid ratios

S 2 CHROMOSOMESS 2. GENES

Gene and chromosome as basis of inheritance

"Mendel’s law of inheritance"

Session 3

Practicals:Mendelian law of inheritance(law of segregation)

"Mendel’s law of inheritance"

Session 4

Practicals:Different type of crosses ( back cross, test cross)

"Mendel’s law of inheritance"

Session 5

Practicals:Linkage ( types & solution)

Crossing over( Recombination & map distance)

"Mendel’s law of inheritance"

Session 6

Practicals:Epistasis (Types & solution)

epistasis"

Session 7

Gene interactions

Dominant and recessive epistasis,

Pleiotropism,

S 3GENE INTERACTION

Gene interaction

Lethal genes

Session 8

Practical: Genetic interaction( degree of dominance)
Pleotropism(Types & Solutions)

GENE INTERACTION

Gene interaction

Session 9

Mutation

Chromosome mutations

Chromosomal aberration

Gene Mutations

Mutagens

MUTATION

Mutation

Session 10

Sex - linked genes,

sex influenced and

sex limited traits

S 5 SEX LINKED GENES

Sex linked genes

Session 11

Linkage and crossing over

Introduction to population genetics.

Hardy- Weinberg law and its significance.

S 6 .LINKAGE AND CROSSING OVER

Linkage

Session 12

Chromosome manipulation techniques

androgenesis,

gynogenesis

and polyploidy and identification of ploidy.

Sex determination.

Cross breeding (hybridization)

types of cross breeding,

heterosis and design of cross breeding programmes,

hybridization in different fishes

S 7 CHROMOSOME MANIPULATION

chromosome manipulation techniques

Session 13

Practical:Androgenesis (Principle & methods)

Androgenesis

chromosome manipulation techniques

Session 14

Practical:Gynogenesis (Principle & methods)

Gynogenesis

chromosomANIPULATIONe manipulation techniques

Session 15

Quantitative genetics

quantitative traits

polygenic traits

heritability

8 Genetics of qualitative and quantitative phenotypes

Quantitative genetics

Session 16

Selective breeding programs in aquaculture.

Selection methods and mating designs.

Design for selective breeding.Inbreeding and its consequences.

Domestication methods.

Seed certification and quarantine procedures

S 9 .SELECTION METHODS AND BREEDING PLANS

selective breeding

Session 17

Cryopreservation of gametes.

S 20 .CRYOPRESERVATION

Cryopreservation

Session 18

Practicals: Protocol on Cryopreservation.

Cryopreservation

Cryopreservation

Case Studies

Case Studies

Our Main Teachers

    Assistant Professor, PhD School of Fisheries Centurion University of Technology and Management (CUTM) Paralakhemundi- 761211 Odisha, INDIA Mobile: +91 6238 514615 Email: [email protected] ACADEMIC QUALIFICATIONS Ph.D. in Fish Nutrition and Feed Technology(2020) from Central Institute of Fisheries Education(CIFE-ICAR), Mumbai M.F.Sc.(Master of Fisheries Science) in Fish Nutrition and Feed Technology (2015) from Central Institute […]