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Fertilization is when the two gametes combine to form a zygote (new cell).
Fertilisation.
sexual reproduction
Sexual reproduction😜😘
Sexual reproduction
If the mutation occurs in a somatic cell and the cell is still able to reproduce, the mutation continues in the daughter cells in following generations. If a mutation occurs in a gamete, the original organism remains unchanged. If that gamete is used for reproduction, then the mutation will continue in the offspring.
Natural selection has favored sexually reproducing organisms because this process provides more genetic variation than asexual reproduction. Populations that are variable are more likely to have individuals that possess the necessary genes to meet environmental changes. In sexual reproduction a new Organism results when the recombination of a male haploid/gametic Sperm Cell genetic complement occurs with a female haploid/gametic Ovum genetic complement. A viable, and usually fertile, zygote ensues. You ask When, I say it is that moment of recombination. [What could be more clear?]
Growth occurs in all living things. Taking in material from the outside environment, a plant or animal creates material that becomes part of its own organism.
In organisms where meiosis occurs to create gametes, sex cells are made to have half as many chromosomes as regular body cells have. For example, a human man's sex cell or gamete would have 23 chromosomes and the non-sex cells in his body (the ones that aren't produced in his testes) would contain 46 chromosomes. This is for the purpose of creating progeny that have an increased variety of genetic information. This is possible because the male gamete combines with the female gamete to create a whole new organism with a new combination of genetic information that has the correct number of chromosomes.
A gamete has half the diploid number of chromosomes, so in this case, the gamete would have 15 chromosomes.
If the mutation occurs in a somatic cell and the cell is still able to reproduce, the mutation continues in the daughter cells in following generations. If a mutation occurs in a gamete, the original organism remains unchanged. If that gamete is used for reproduction, then the mutation will continue in the offspring.
what are some examples of a reversible reaction that occurs in the living organism?
Spermatogenesis.
These terms are fairly intuitive. External means outside. Internal means inside. Fertilization occurs when the male gamete (sperm) meets the female gamete (egg). External fertilization is fertilization that occurs outside the body, whereas internal fertilization is fertilization that occurs inside the body (usually the body of the female).
Natural selection has favored sexually reproducing organisms because this process provides more genetic variation than asexual reproduction. Populations that are variable are more likely to have individuals that possess the necessary genes to meet environmental changes. In sexual reproduction a new Organism results when the recombination of a male haploid/gametic Sperm Cell genetic complement occurs with a female haploid/gametic Ovum genetic complement. A viable, and usually fertile, zygote ensues. You ask When, I say it is that moment of recombination. [What could be more clear?]
Growth occurs in all living things. Taking in material from the outside environment, a plant or animal creates material that becomes part of its own organism.
Growth occurs in all living things. Taking in material from the outside environment, a plant or animal creates material that becomes part of its own organism.
The light produced by bioluminescence uses the energy from a living organism. Bioluminescence occurs in marine animals, such as loose-jawed fish of the genus Tomopteris; bioluminescence also occurs in land animals, such as the glow worm and the firefly.
In organisms where meiosis occurs to create gametes, sex cells are made to have half as many chromosomes as regular body cells have. For example, a human man's sex cell or gamete would have 23 chromosomes and the non-sex cells in his body (the ones that aren't produced in his testes) would contain 46 chromosomes. This is for the purpose of creating progeny that have an increased variety of genetic information. This is possible because the male gamete combines with the female gamete to create a whole new organism with a new combination of genetic information that has the correct number of chromosomes.
Meiosis is the division of the sex cells (sperm and egg). Meiosis produces gametes with one half the number of chromosomes as the parent cell. A female gamete and male gamete will then undergo fertilization and create a zygote. (not limited to just humans, meiosis occurs in sexually reproducing organisms).
Occurs when a new organism is formed from the same organism
A gamete has half the diploid number of chromosomes, so in this case, the gamete would have 15 chromosomes.