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Kin selection / Inclusive fitness - if the helper and receiver are related, then they share some of their genes. By helping a relative, you are increasing the likelihood of them passing on their genes, some ...

All vertebrates have a vertebral column or backbone. As chordates, all vertebrates have a similar anatomy and morphology with the same qualifying characteristics: a notochord, a dorsal hollow nerve cord, pha...

In the mid-19th century Gregor Mendel carried out breeding experiments on plants. He worked on the characteristics of pea plants. One of his observations was that the inheritance of each characteristic is de...