What is the difference between a hybrid organism and a purebred?

Answer 1

HYBRID ORGANISMS-

In biology, hybrid has two meanings.

The first meaning is the result of interbreeding between two animals or plants of different taxa. Hybrids between different species within the same genus are sometimes known as interspecific hybrids or crosses. Hybrids between different sub-species within a species are known as intra-specific hybrids. Hybrids between different genera are sometimes known as intergeneric hybrids. Extremely rare interfamilial hybrids have been known to occur (such as the guineafowl hybrids).

The second meaning of "hybrid" is crosses between populations, breeds or cultivars of a single species. This second meaning is often used in plant and animal breeding.

Ernst Mayr wrote of Gregor Mendel:

"He was uncertain about the nature of the kinds of peas he crossed, and, like most plant breeders, he called heterozygotes "hybrids". When he tried to confirm the laws he had found by using "other hybrids" that were actually real species hybrids, he failed. The use of the same term "hybrid" for two entirely different biological phenomena thwarted his later efforts." [1]
Some dog hybrids (used in sense two, above), are becoming increasingly popular and are being bred selectively. In cats, the erroneous term feral-domestic hybrid is often used to indicate a cross between the domestic cat and a wild cat species (erroneous because a "feral" animal is a domestic animal that has reverted to the wild state).

An example of an intra-specific hybrid is a hybrid between a Bengal tiger and an Amur (Siberian) tiger.

Plant hybrids, especially, are often stronger than either parent variety, a phenomenon which when present is known as hybrid vigour (heterosis) or heterozygote advantage. Plant breeders make use of a number of techniques to produce hybrids.

The Lonicera fly is the first known animal species that resulted from natural hybridization. Until the discovery of the Lonicera fly, this process was known to occur in nature only among plants.

FOR EXAMPLES AND MORE INFORMATIOM CLICK THE LINK-- http://en.wikipedia.org/wiki/Hybrid_organisms


PURE BRED ORGANISMS

A true breeding organism, sometimes also called a pure-bred, is an organism having certain biological traits which are passed on to all subsequent generations when bred with another true breeding organism for the same traits. In other words, to "breed true" means that two organisms with a particular, heritable phenotype only produce offspring with that same phenotype.

In the case of a gene with multiple different alleles, the genotype of a true breeding organism is homozygous. For example, a pure-bred variety of cat, such as Siamese, only produce kittens with Siamese characteristics because their ancestors were inbred until they were homozygous for all of the genes that produce the physical characteristics and temperament associated with the Siamese breed.

True breeding is also used to refer to plants that produce only offspring of the same variety when they self-pollinate. For example, when a true-breeding plant with pink flowers is self-pollinated, all its seeds will only produce plants that also have pink flowers. Gregor Mendel cross-pollinated true-breeding peas in his experiments on patterns of inheritance of traits.

Inbreeding is breeding between close relatives, whether plant or animal. If practiced repeatedly, it often leads to a reduction in genetic diversity, and the increased gene expression of negative recessive traits, resulting in inbreeding depression. This may result in inbred individuals exhibiting reduced health and fitness and lower levels of fertility.

Livestock breeders often practice inbreeding to "fix" desirable characteristics within a population. However, they must then cull unfit offspring, especially when trying to establish the new and desirable trait in their stock.

In plant breeding, inbred lines are used as stocks for the creation of hybrid lines to make use of the heterosis effect. Inbreeding in plants also occurs naturally in the form of self-pollination.

FOR MORE CLICK THE LINKS--

http://en.wikipedia.org/wiki/True_breeding_organism

http://en.wikipedia.org/wiki/Inbreeding

Answer 2

Hybrid Organisms

Answer 3

A hybird CAN be purebreed if the genes it receives are from parents that are purebreed.... for example a Rough Coated Collie father and a Smooth Coated Collie mother could breed and produce a hybrid litter. The litter would still be PureBreed because the genes were all Collie.... justa hybrid because the genes were of two different varieties.

NOW take Brocoflower... that is a hybrid that is NOT purebreed.
One side of the gene pool is Broccoli and one is Cauliflower
so the result is a hybrid that is not Pure Breed.

So the answer is - it depends.....

Answer 4

I always try to be simple. I had a red and white rose. It was a hybrid meaning they took a red rose and a white rose and made a rose that literally was red as a bud and when it opened it was white. A purebred is just that. It's a pure red rose. No genetic fancy stuff at all. Hope this helps.

Answer 5

A hybrid has genes from two kinds of parents. It is heterozygous. A purebred is homozygous.

Answer 6

Use Mendel's examples. He took a purebred tall pea plant and cross-pollinated it with a pure-bred short pea plant. The outcome was a hybrid plant. Pure breds have only homozygous dominant or reccesive, it can't be heterozygous.

Answer 7

A hybrid is heterozygous, while a purebred is homozygous. For more detail please refer to this website: