0
Before scientists discovered sex cells, reproduction was often thought to involve a mixture of fluids from both parents, with beliefs varying from the idea of a homunculus being present in the father's semen to the notion of "preformation" where miniature versions of offspring were already present in either the egg or sperm. These explanations were part of the theory of spontaneous generation and were eventually replaced by the theory of sexual reproduction with the discovery of sex cells.
What else can I help you with?
Why might this kind of reproduction be easier than having only male cells or female cells?
pollenation is necessary for reproduction
The type of reproduction requiring the union of two specialized cells is referred to as?
sexual reproduction
What type of reproduction when two sex cells usally an egg and sperm come together?
Sexual as opposed to asexual.The type of reproduction when two sex cells, usually an egg and sperm come together is known as sexual reproduction.
Does DNA replication occure immediately before asexual reproduction before sexual reproduction or before both?
Any form of biological reproduction, whether sexual or asexual, is going to involve the replication of DNA. You can't have new cells without new DNA.
Why are cells division and reproduction important?
so there is a correct amount of cells
How was reproduction explained before cells?
there is no such ting as before cells there has always been cells in the body
Why isn't there centrioles in plant cells?
scientists havent found out yet. But it is known to show up during reproduction
Why do cells need to double their chromosomes before mitosis starts?
They are in need of reproduction.
Why could scientists not see cells before the microscope?
The cells are too small for scientists to see with the naked eye. For some perspective on how small cells are, the dot above the letter 'i' is about the size of fifty cells. Scientists could not see regular cells with the eye alone.
What are the six signs of life that scientists look for when determining whether?
The six signs of life that scientists look for are responsiveness to the environment, growth and development, reproduction, homeostasis (maintaining internal stability), energy processing, and cellular organization. These characteristics help scientists determine if an organism is alive.
Does DNA replication occure immediately before asexual reproduction before sexual reproduction or both?
Any form of biological reproduction, whether sexual or asexual, is going to involve the replication of DNA. You can't have new cells without new DNA.
What is the reproduction of all body cells called?
mitosis and the sexual reproduction of cells are called meiosis
Reproduction that results from two parent cells?
Sexual Reproduction
What is reproduction of male and female sex cells?
Asexual Reproduction
What are the kind of reproduction?
in cells, the reproduction involved is the MITOSIS AND MEIOSIS!!
Why might this kind of reproduction be easier than having only male cells or female cells?
pollenation is necessary for reproduction
What is used in cell reproduction?
sperm cells and egg cells
