In sexual reproduction, genetic material from two separate organisms is combined in the offspring. The other alternative is asexual reproduction, in which the genetic material for the offspring comes from just one parent.
Chat with our AI personalities
The production of gametes is termed gametogenesis. In diploid organisms, it is a process by which diploid or haploid precursor cells undergo cell division and differentiation to form mature haploid gametes. Depending on the biological life cycle of the organism, gametogenesis occurs by meiotic division of diploid gametocytes into various gametes or by mitotic division of haploid gametogenous cells. For example, in vertebrates, meiosis in diploid organisms reduces the number of sets of chromosomes from two to one (i.e., produces haploid gametes from diploid gametocytes). On the other hand, plants may produce gametes through mitosis in gametophytes. The gametophytes grow from haploid spores after sporic meiosis. The existence of a multicellular, haploid phase in the life cycle between meiosis and gametogenesis is also referred to as alternation of generations. Organs that produce gametes are called gonads in animals, and archegonia or antheridia in plants.
Meiosis is the genetic reproductive process by which two diploid organisms each donate half of their chromosomes to form a zygote which in turn will become the offspring.
No, the gametes or sex cells contain only half of the chromosomes of a body cell so the gene count would not be equal.
Cloning can help infertile couples to have 'children' but as kid-twin of the mother or the father. Children would be genetically brother or sister of the either parents. P.S. - Cloning needs somatic (body) cell chromosome unlike in natural births (requiring gametes - reproductive cells).
Crossing over: exchange of parts of DNA in a homologous chromosome in the area where they come in contact with each other. Then this chromosome splits, during meiosis, to form a daughter cell (gamete) with a haploid number of chromosomes. During fertilization, the two gametes fuse into one cell containing now a diploid number of chromosomes. This process leads to genetic diversity and variation.
cellular cloning is the process of making a populaion of cells from a single cell. cellular cloning is the process of making a populaion of cells from a single cell. cellular cloning is the process of making a populaion of cells from a single cell.
True!!