What is a genotype?
1 Answer
Genotype indicates genetic constitution with respect to one or more traits
Explanation:
Genotype indicates the genetic constitution, whereas phenotype indicates externally observed appearance with respect to one or more traits.
Let us understand this by taking a specific example of pea plant ( Pisum sativum ).
We may select 10 tall pea plants which appear tall on observation. All these plants are phenotypically similar , i.e. these have same phenotype.
However, all these plants may not be genotypically different , though looking similar on external observation.
Some of these plants may have genotype TT (homozygous ) or Tt (heterozygous) . These tall plants may be called pure tall or impure tall.
On selfing homozygous tall plants will produce only tall offsprings , whereas heterozyous tall plants will produce both tall and dwarf plants.