The method(s) used for fixation of heterosis are
A. Apomixis
B. Polyploid
C. Asexual reproduction
D. All of these
Answer: Option D
Solution(By Examveda Team)
The method(s) used for the fixation of heterosis are Apomixis, Polyploid, and Asexual reproduction.Apomixis is asexual reproduction without fertilization. Replacement of the seed by a plantlet or replacement of the flower by bulbils were categorized as types of apomixis.
Polyploidy is a condition in which the cells of an organism have more than one pair of (homologous) chromosomes.
Asexual reproduction produces new individuals without the fusion of gametes, resulting in clonal plants that are genetically identical to the parent plant.
And lastly, we know that Heterosis refers to the phenomenon that progeny of diverse varieties of a species or crosses between species exhibit greater biomass, speed of development, and fertility than both parents.
Related Questions on Genetics and Plant Breeding
Genetic code was discovered by
A. Khorana and Methaei
B. Flemming and Methaei
C. Holley, Nirenberg and Khorana
D. Holley and Nirenberg
Progeny of breeder seed is referred to as
A. Breeder seed
B. Nucleus seed
C. Foundation seed
D. Certified seed
Molecular basis of organ differentiation depends on the modulation in transcription by
A. RNA pol
B. Transcription factor
C. Anticodon
D. All of the above
The phenomenon of linkage was first observed by
A. Bateson and Punnet
B. Nilson
C. Hugo de Vries
D. Mendel
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