The desert and tundra are alike because they both have limited available water.
This isn't always the case and there is no reason it should be .Whether or not a trait is common has to do with how many copies of that gene version (or allele) are in the population. It has little or nothing to do with whether the trait is dominant or recessive. Let's take eye color as an example.
Lamarckism also known as Lamarckian inheritance
The answer is Glycerol
Hope this helps
