The answer should be chlorophyll <span>
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The answer is genes and not jeans.
Well, it depends on the purple pea plant. Purple pea plants can have either PP or Pp.
White pea plants always have recessive, so it would have pp only.
So, the expected outcome of the cross would be -
PP x pp or Pp x pp
PP x pp = all the offspring would be purple in colour
or
Pp x pp = half would be purple and the other half would be white
One evolutionary event important for plants was the development of the atmosphere and oxygen and carbon dioxide since plants take in carbon dioxide and give off oxygen. The development of photosynthesis was key to taking advantage of this aiding in the ingestion of carbon dioxide and the respiration of oxygen. Also, the development of soil for plants to grow in is related to the evolution of landforms as for example the flooding of the banks of major rivers to deposit silt useful as a growing medium or the melting of glaciers forming glacio-fluvial soil deposits helped to provide such growing mediums. Natural selection also played a role in plant evolution so that varieties of each plant species developed and the varieties favorable to the environmental conditions would thrive. Also, biodiversity or the development of many types of plants adapted to their environment and to each other was very important to the development of say a rainforest or a tropical jungle.
Are examples of quantitative trait / polygenic inheritance.
A quantitative trait is a phenotype that can be measured and depends on the
cumulative actions of many genes and the environment.
These traits are very variable among individuals, there is a range of phenotypes with continuous
distribution. For examples: height, weight, shoe size and skin color.
