ABC’s of Poultry Genetics

by

Dr. W.F. Hollander, PH.D.

A handwritten chart titled 'Some taxonomy (=natural groupings). Reference: dictionaries.' It organizes birds into classes, orders, families, genera, species, and origins. It includes classifications like Anseriformes (goose-like) with species such as swan, goose, and duck, as well as Galliformes (chicken-like) with species like pheasant and quail. The chart also notes domesticated species with asterisks and indicates geographic origins like Europe, Asia, North America, Africa, and Australia.

Throwbacks=recessives

Capital letter=dominant gene

lower case =recessive gene

“absence of dominance”=”imperfect dominance”= all recessives, no dominants

Allelemorph=old terminology of allele.

Locus=position on a chromosome

allele=a variant for of a gene at a particular position on a chromosome

Latent=hidden but present because it needs another to present

William Bateson, 1894

“Materials for the study of Variation”, book he wrote, British at cambridge

1902 book, “Mendel’s Principles of Heredity:aDefense”

He was first to use animals for Mendelism

1906

Bateson at conference

Proposed term “Genetics”

P1 =parental generation of a cross

F1=First Filial generation

F2=progeny of F1xF1

B1=F1xP1

homozygous(adj)=same united

homozygote(n)=pure united

heterozygous(adj)=difft united

heterozygote(n)=impure united

conference approved terms