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Phenotype of an organism is the result of -
A
Mutations and linkages
B
Cytoplasmic effects and nutrition
C
Environmental changes and sexual dimorphism
D
Genotype and environment interactions
Detailed Solution
The genotype is the genetic constitution of an organism, i.e. the set of alleles it carries.
The phenotype is the observable expression of its characters: appearance, structure, physiology and behaviour.
The genes set the potential for a character, but how far that potential is expressed depends on the environment (nutrition, temperature, light and so on).
For example, a plant with genes for tallness will not grow tall if it is starved of nutrients, and genetically identical plants can look different in different environments.
So the phenotype = genotype + environment.
Mutations, linkage, cytoplasmic effects and sexual dimorphism each affect only particular characters.
So the phenotype of an organism is the result of genotype and environment interactions.
The phenotype is the observable expression of its characters: appearance, structure, physiology and behaviour.
The genes set the potential for a character, but how far that potential is expressed depends on the environment (nutrition, temperature, light and so on).
For example, a plant with genes for tallness will not grow tall if it is starved of nutrients, and genetically identical plants can look different in different environments.
So the phenotype = genotype + environment.
Mutations, linkage, cytoplasmic effects and sexual dimorphism each affect only particular characters.
So the phenotype of an organism is the result of genotype and environment interactions.