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2013 Sexual and Asexual Reproduction

Estuardo Romero

Colegio Amanecer 12-4-2013


Reproduction: Is the biological process by which new “offspring�. Reproduction is a fundamental feature of all knows life; each individual organism exists as the result of reproduction. The know methods of reproduction the know methods of reproduction are broadly grouped into two main types:


Sexual Reproduction: Sexual Reproduction: Is a biological process by which Organisms create descendants that have combination of genetic material contributed from two different members of species. Most organisms from two different of gametes. In these species the two sexes are referred to as male (producing sperm or microspore) and female (producing eggs and megaspore).


Asexual Reproduction: Is the process by which an organism creates a genetically similar or identical copy of itself without a contribution of genetic material from another individual. Bacteria divide asexually via binary fission; viruses take control of host cells to produce more viruses. These organisms often do not posses different sexes, they are capable of splitting themselves into two or more indivuduals. Most plants can reproduce by spores.


Most animals (including humans) and plants reproduce sexually. Sexually reproducing organisms have different sets of genes for every trait( called alleles). Offspring inherit one allele for each trait from each parent, thereby ensuring that offspring have a combination of the parents genes.


Mitosis:


Meiosis:


Allogamy: Allogamy is a term used in the field of biological reproduction describing the fertilization of an ovum from one individual with the spermatoz oa of another.


Autogamy: Self-fertilization (also known as autogamy) occurs in hermaphroditic organisms where the two gametes fused in fertilization come from the same individual. They are bound and all the cells merge to form one new gamete.


Images of Reproduction:


Sexual and Asexual Reproduction Magazine