What are some differences between the domestication of plants and the domestication of animals?
The initial domestication of animals impacted most on the genes that controlled their behavior, but the initial domestication of plants impacted most on the genes that controlled their morphology (seed size, plant architecture, dispersal mechanisms) and their physiology (timing of germination or ripening).
What is variation in relation to plants and animals?
variation, in biology, any difference between cells, individual organisms, or groups of organisms of any species caused either by genetic differences (genotypic variation) or by the effect of environmental factors on the expression of the genetic potentials (phenotypic variation).
How do animals change during domestication?
Summary: The process of domestication is not uniform across species, explains a palaeoanthropologist in a new report. These changes are commonly referred to as the domestication syndrome and include behavioral changes, such as increased docility as well as genetic alterations in size, color and facial characteristics.
Which animals were domesticated after the dog?
Wolves were the first animal to be domesticated, sometime between 33,000 and 11,000 years ago. After domesticated dogs came the domestication of livestock animals, which coincided with a widespread shift from foraging to farming among many cultures. A rancher herds sheep in the Idaho mountains.
How did the domestication of plants and animals affect agrarian societies?
Answer Expert Verified domestication of plants and animals affect agrarian societies by creating a surplus of food which means not every one had to farm and people became skilled in other labors. Most people lived nomadic life.Fruits,roots and animal meat was their food.
How did the domestication of plants and animals change early societies?
Animal domestication changed a great deal of human society. It allowed for more permanent settlement as cattle provided a reliable food and supply source. A downside to domestication was the spread of diseases between humans and animals that would have otherwise jumped between species.
What are variations in animals?
The differences between the individuals in a species is called variation. Variation helps a species to survive, by causing individuals of a species to be genetically and physically different.
What is the importance of variation in animal and plants?
Genetic variation in a group of organisms enables some organisms to survive better than others in the environment in which they live. Organisms of even a small population can differ strikingly in terms of how well suited they are for life in a certain environment.
What adaptations have occurred in dogs through domestication?
In fact, the study revealed that during the domestication of dogs, selection acted on genes involved in all three of the stages of starch digestion, promoting mutations that facilitated adaptation from a meat-centric diet to one heavy on starch.
How do the six characteristics of domesticated animals allow for domestication?
In his book Guns, Germs, and Steel, Diamond argues that to be domesticated, animals must possess six characteristics: a diverse appetite, rapid maturation, willingness to breed in captivity, docility, strong nerves, and a nature that conforms to social hierarchy.
How did domestication of plants and animals lead to the development of towns?
How did domestication of plants and animals lead to the development of towns? People settled in one place to grow crops and tend animals. Better control of food production enabled populations to grow.
What did the domestication of plants and animals lead to?
What causes variation in animals and plants under Domestication?
The first volume of The Variation of Animals and Plants under Domestication consists in a lengthy and highly detailed exploration of the mechanisms of variation, including the principle of use and disuse, the principle of the correlation of parts, and the role of the environment in causing variation, at work in a number of domestic species.
When did Charles Darwin write variation of animals and plants?
The Variation of Animals and Plants Under Domestication Charles Darwin 2nd edition, 1875 Book I Introduction Chapter I: Domestic Dogs and Cats.
What is the origin of most domestic animals?
Artificial selection is the selection of advantageous natural variation for human ends and is the mechanism by which most domestic species evolved. Most domesticates have their origin in one of a few historic centers of domestication as farm animals. Two notable exceptions are cats and dogs.
What did Darwin call the theory of domestication?
A large proportion of the book contains detailed information on the domestication of animals and plants but it also contains in Chapter XXVII a description of Darwin’s theory of heredity which he called pangenesis .