Silent? Not exactly, but that is likely what your religious propaganda is claiming we do.DOES ANYONE CARE TO EXPLAIN THE FOLLOWING
Biology texts illustrate amoebas evolving into intermediate organisms, which then give rise to amphibians, reptiles, mammals, and, eventually, humans. Yet, we never learn exactly when or how independent male and female sexes originated. Somewhere along this evolutionary path, both males and females were required in order to ensure the procreation that was necessary to further the existence of a particular species. But how do evolutionists explain this? When pressed to answer questions such as,“Where did males and females actually come from?,”“What is the evolutionary origin of sex?,” evolutionists become silent. How could nature ev
My question is, if science does not yet know all the answers, must it mean god did it?
Males and females evolved as a slow differentiation of sexually reproducing species.
To understand this, remember that sexual reproduction does not require separate sexes. There are many species of both plants and animals that reproduce sexually, but have no dedicated sexes. Either all individuals of the species have both male and female organs, or they will change from male to female at different times of their lives, or based on temperature during incubation, or a slightly different hormonal environment. So it is not difficult for individuals of some species to slowly get more and more differentiated.
So start with the development of sexual reproduction. This just means that gametes from one individual combine with the gametes of a second individual to form a new individual.
And second, none of these development had to be sudden. There did not have to be a sudden transition from asexual reproduction to one with sexual reproduction (as both can exist simultaneously in the same species); and there did not have to be a sudden transition from a species without sexual organs to one with (as sexual organs are just organs for better production, spreading, and fertilizing of gametes); and third, there did not have to be a sudden transition from a species without males and females to one where individuals only have one kind of sex organ or the other depending on genetics.
To give a single example that illustrates both of these points, look at the slime mold amoeba. It reproduces both asexually and sexually. Normally the amoebas just divide asexually ... so all the amoebas in a colony are clones of the same individual. But when resources get scarce, the amoebas congregate and produce a stalk with a fruiting body at the top filled with spores ... gametes (haploid versions of the amoeba cells). This bursts, releasing the spores (gametes) into the air, which encounter other spores (gametes) from other colonies, fertilize, and start a new colony.
The stalk and fruiting body can be considered the beginnings of a "sexual organ" ... it is a structure designed for the mass-production, and release of gametes.
But the main point is that this shows how there can be a slow transition from asexual reproduction to a *combination* of asexual and sexual reproduction, to a dedicated *sexually reproducing* species.
Second, once sexual reproduction is established, then the next step is the slow differentiation between "male" gametes (smaller, and better suited for mass-production and release), and "female" gametes (larger, and better suited for being fertilized and beginning the process of cell replication).
Third, once the gametes have differentiated, then organs will start specializing in the production of one or the other ... i.e. organs for making and releasing "male" gametes, and for making and protecting "female" gametes and making fertilization more successful.