Advantages and Disadvantages of Hybridization in Biology

Meaning of Hybridization in Biology

Hybridization means interbreeding between two unrelated species to create a hybrid which may be created for a commercial use.

Hybridization therefore entails the process of mating two organism belonging to two different species to create an organism possessing the qualities of both organism.

In reproductive biology, hybridization means the act or process of mating organisms of different varieties or species to create a hybrid. It’s something like cross breeding. Tigers and mules are examples of animal hybrid.

In molecular biology process of forming a double stranded nucleic acid from joining two complementary strands of DNA(or RNA) (as in nucleic acid hybridization).

Advantages of Hybridization

(1)    Two species combine to form the best of the organism.

(2)    Hybrid plants are physically uniform. This is manly advantageous for farmers who harvest with machines, but it is     usually not a big deal for small green house gardeners.

(3)    Hybridization help in getting different species of animals.

(4)    They pass along favourable traits and prolong the survival of threatened or endangered species.

(5)    They (hybrids) often show greater vigor and faster growth

(6)    Hybrids can have up to 25 (twenty five) percent higher yield.

(7)    They result in the formation of organisms which possesses  various qualities such as disease resistance, stress resistance and so on.

(8)    In animals such as humans, hybridization help in the detection of the presence of amplified genes in cancer and to map out their location.

(9)    Hybridization creates room for better adaptation of new species.

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Disadvantages of Hybridization

(1)    The process of hybridization is quite expensive costing up to five times the value of the normal process.

(2)    They suffer more than the normal plants if not provided with the normal requirements.

(3)    They have difficult finding mates and successfully breeding.

(4)    It can lead to extinction of some species. For example, a Blue -winged warbler and a Golden–winged warbler mated and created a new type of bird. The new bird was able to mate with each other and the parental types. There was no signs that the two species were fusing back into one, so it seems that the Blue–winged warbler is replacing the Golden–winged warbler because the other type of bird or the Blue–winged warbler continued mating with other Blue–winged warbler and out competing the Golden winged warbler.

(5)    High risk of uncertainty: You may end up losing the original hybrids.


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