The expression of flower color -qualitative character- and the length of the pollen grains -quantitative continuous character- is controlled by genes. Option A) TRUE.
Characters might be either qualitative or quantitative, discrete or continuous. In any case, genes are the units that control the expression of these characters.
A gene might be diallelic or multiallelic, and a character might be coded either by a single gene or by multiple genes.
The expression of the individual's phenotype varies according to the interaction between the involved genes and the inheritance pattern.
So characters are genetically determined. However, we need to consider that phenotype is also influenced by the environment.
Individuals are exposed to different environmental pressures that might lead them to express a different phenotype.
The phenotype depends on the interaction between the genotype and the environment. The environment, for instance, has a significant influence on the expression of quantitative characters like the length of the pollen grain.
In the exposed example,
Both of them are coded by genotypes. This is, their expression depends on the involved genes. However, in the case of lengths, the environment also plays a significant role in its expression.
Option A is correct. The statement is TRUE.
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