Answer
405k+ views
Hint: Heterosis, commonly known as an outbreeding enhancement, is one of the most commonly followed methods to improve the quality of any offspring over their parents. The offsprings which are enhanced using this technique are called heterotic.
Complete answer:
In heterosis, the genes of the parents are mixed to produce superior offspring. The term ‘heterosis’ given by G. H. Shull replaced the term heterozygous which was used earlier. The physiological characteristics of an organism depend upon the degree of dissimilarities of the gametes united to produce the organism.
Heterosis is the affinity to surpass the characters of both the parents. Selective breeding is the most common way to perform this function. If one of the parents has a unique quality and the other parent has some other quality which is absent in the first partner, and then combining the genes of these two parents could lead to the formation of a superior offspring.
In plants, heterosis helps in increasing the yield of the crops by producing better quality and higher resistance to pests and diseases. It is accomplished by crossing different heterotic groups to produce a vigorous F1 hybrid progeny. Modern techniques are very beneficial to produce hybrids that are better adapted to the environment and respond more to the fertilizers. Major crops produced by heterosis to increase their yield are maize, rice, sunflower, sorghum, sugar beet, onion, etc.
Note:
Heterosis is done to avoid inbreeding depression in which the biological species reduces its fitness due to repeated self-fertilization, and thus loses its ability to survive. Thus genetic variation is very important within a breeding population.
Complete answer:
In heterosis, the genes of the parents are mixed to produce superior offspring. The term ‘heterosis’ given by G. H. Shull replaced the term heterozygous which was used earlier. The physiological characteristics of an organism depend upon the degree of dissimilarities of the gametes united to produce the organism.
Heterosis is the affinity to surpass the characters of both the parents. Selective breeding is the most common way to perform this function. If one of the parents has a unique quality and the other parent has some other quality which is absent in the first partner, and then combining the genes of these two parents could lead to the formation of a superior offspring.
In plants, heterosis helps in increasing the yield of the crops by producing better quality and higher resistance to pests and diseases. It is accomplished by crossing different heterotic groups to produce a vigorous F1 hybrid progeny. Modern techniques are very beneficial to produce hybrids that are better adapted to the environment and respond more to the fertilizers. Major crops produced by heterosis to increase their yield are maize, rice, sunflower, sorghum, sugar beet, onion, etc.
Note:
Heterosis is done to avoid inbreeding depression in which the biological species reduces its fitness due to repeated self-fertilization, and thus loses its ability to survive. Thus genetic variation is very important within a breeding population.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Why Are Noble Gases NonReactive class 11 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let X and Y be the sets of all positive divisors of class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x and y be 2 real numbers which satisfy the equations class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x 4log 2sqrt 9k 1 + 7 and y dfrac132log 2sqrt5 class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x22ax+b20 and x22bx+a20 be two equations Then the class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Trending doubts
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Which are the Top 10 Largest Countries of the World?
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Write a letter to the principal requesting him to grant class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Give 10 examples for herbs , shrubs , climbers , creepers
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Fill in the blanks A 1 lakh ten thousand B 1 million class 9 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Change the following sentences into negative and interrogative class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference Between Plant Cell and Animal Cell
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)