1. Edward O. Wilson, known by many to be the "father" of sociobiology states this:
scientists and humanists should consider together the possibility that the time has come for ethics to be removed temporarily from the hands of the philosophers and biologicized (Wilson, 1975: 27).
2. Charles Darwin, of course you know who he is.
The biologization of ethics started with the publication of
The Descent of Man by Charles Darwin (1809-1882) in 1871. In this follow-up to
On the Origin of Species, Darwin applied his ideas about evolutionary development to human beings. He argued that humans must have descended from a less highly organized formin fact, from a hairy, tailed quadruped
inhabitant of the Old World (Darwin, 1930: 231). The main difficulty Darwin saw with this explanation is the high standard of moral qualities apparent in humans. Faced with this puzzle, Darwin devoted a large chapter of the book to evolutionary explanations of the moral sense, which he argued must have evolved in two main steps.
First, the root for human morality lies in the social instincts (ibid. 232). Building on this claim by Darwin, todays biologists would explain this as follows. Sociability is a trait whose phylogenetic origins can be traced back to the time when birds invented brooding, hatching, and caring for young offspring. To render beings able to fulfill parental responsibilities required social mechanisms unnecessary at earlier stages of evolutionary history. For example, neither amoebae (which reproduce by division) nor frogs (which leave their tadpole-offspring to fend for themselves) need the social instincts present in birds. At the same time as facilitating the raising of offspring, social instincts counterbalanced innate aggression. It became possible to distinguish between them and us and aim aggression towards individuals that did not belong to ones group. This behavior is clearly adaptive in the sense of ensuring the survival of ones family.
Evolutionary Ethics[bless and do not curse][Internet Encyclopedia of Philosophy]
3. Herbert Spencer (1820-1903), the most fervent defender of evolutionary ethical theory and the creator of the theory of Social Darwinism.
4. Michael Ruse (1995: 250), for instance, argues that morality is a collective illusion of the genes, bringing us all in
. We need to believe in morality, and so, thanks to our biology, we do believe in morality. There is no foundation out there beyond human nature.
5.
Frans De Waal asserts, "In the words of Edward Wilson, biology holds us "on a leash" and will let us stray only so far from who we are. We can design our life any way we want, but whether we will thrive depends on how well the life fits human predispositions".
[9] *Wikipedia*
6.
Thomas Huxley allows that ethical sentiments have evolved but denies that this provides a basis for morality (
Evolution and Ethics,1893) *Wikipedia*
These are a few that I could find by doing an elementary google search.