- Hitchhiker’s thumb versus regular thumb
- tongue rolling
- longer second toe than big toe (or vice versa)
- left-thumbed or right-thumbed when interlocking fingers
- earlobes as either attached or unattached
This tutorial describes the role of gibberellin family in plants. Find out the effects of gibberellin on plant growth an..
A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal ..
Nutrients in the soil are essential to the proper growth of a land plant. This tutorial deals with the properties of soi..
This tutorial looks at sex determination via the sex chromosomes, X and Y. Read it to get more info on X and Y chromosom..
If the balance of nature is left untouched, landscapes can change dramatically over time. A previous ecosystem is supers..