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How does the alternation of meiosis and fertilization in the life cycles of sexually reproducing organisms maintain the normal chromosome count for each species?
Simple, Meiosis reduce the chromosome number in half while fertilization doubles the chromosome number. n=chromosome number Meiosis = 2n (primordial germ cells) ----> n (sperm cell/egg cell/polar bodies) Fertilization = sperm (n) + egg (n) ----> 2n (zygote)
What are the 3 types of biogeochemical cycles?
WaterNitrogencarbon dioxide
Why do some species employ both mitosis and meiosis where others only use mitosis?
Some species use both mitosis and meiosis because they have specialized reproductive cycles that involve both processes. Mitosis is used for growth, development, and tissue repair, while meiosis is specifically used for the production of gametes (sex cells) for sexual reproduction. In contrast, species that only use mitosis for reproduction have simpler life cycles and reproduce asexually, without the need for meiosis to generate genetically diverse offspring.
Why is meiosis sometimes called reduction division?
Due to the fact that meiosis consists of two "phases" or cycles and goes from a diploid state (2n) to a haploid state (n) it is often times referred to as reduction division. This is because the parent cell starts off with two sets of chromosomes and the daughter cells only end up with one set of chromosomes when the entire process is complete.
How does the fertilization affect the menstrual cycle?
Fertilization would be when conception occurs, if the fertilized egg implants itself in the uterus lining this is when pregnancy occurs and thus the menstrual cycles stop. Although fertilization doesn't always result in pregnancy, and pregnancy can miscarry at any point.
How does the alternation of meiosis and fertilization in the life cycles of sexually reproducing organisms maintain the normal chromosome count for each species?
Simple, Meiosis reduce the chromosome number in half while fertilization doubles the chromosome number. n=chromosome number Meiosis = 2n (primordial germ cells) ----> n (sperm cell/egg cell/polar bodies) Fertilization = sperm (n) + egg (n) ----> 2n (zygote)
Plant life cycles differ from animal life cycles in that?
spore formation occurs in between meiosis and gamete formation.
How would you describe the process of miosis?
There is two cycles to the process of meiosis. The cycles are involving a gamete mother cell and dividing them into fourths.
Which of the following occurs in meiosis but not mitosis?
Meiosis is the division of the gametes(sex cells), haploid (n) Mitosis is cell division, diploid (2n) In meiosis, there are the similar cycles (prophase, metaphase, anaphase, and telophase), but there are two cycles of each (ex: prophase 1, prophase 2 ETC).
When fertilization take place?
fertilization takes place when the sperm came in hahahaha :P seriously it's true Most woman are able to becomke pregnant from puberty,when their menstrual cycles begin ,until menopause,when their cycles stop. A pregnancy starts with fertilization ,when a woman's egg join with the man's sperm .fertilization usually takes place in the fallopian tube and implants in the uterus an embryo starts growing.
What are the 3 types of biogeochemical cycles?
WaterNitrogencarbon dioxide
What are the seasons and cycles of an international space station?
Winter, Spring, Sumer and Autumn. The cycles are bicycles and motorcycles, but these are generally not used, due to their relative uselessness in low gravity.
Why do some species employ both mitosis and meiosis where others only use mitosis?
Some species use both mitosis and meiosis because they have specialized reproductive cycles that involve both processes. Mitosis is used for growth, development, and tissue repair, while meiosis is specifically used for the production of gametes (sex cells) for sexual reproduction. In contrast, species that only use mitosis for reproduction have simpler life cycles and reproduce asexually, without the need for meiosis to generate genetically diverse offspring.
How many cell divisions are in meiosis?
Meiosis involves two rounds of cell division: meiosis I and meiosis II. Meiosis I is responsible for reducing the chromosome number from diploid to haploid, while meiosis II divides the resulting haploid cells to produce gametes with a single set of chromosomes.
When does fertillization take place?
fertilization takes place when the sperm came in hahahaha :P seriously it's true Most woman are able to becomke pregnant from puberty,when their menstrual cycles begin ,until menopause,when their cycles stop. A pregnancy starts with fertilization ,when a woman's egg join with the man's sperm .fertilization usually takes place in the fallopian tube and implants in the uterus an embryo starts growing.
Why is meiosis sometimes called reduction division?
Due to the fact that meiosis consists of two "phases" or cycles and goes from a diploid state (2n) to a haploid state (n) it is often times referred to as reduction division. This is because the parent cell starts off with two sets of chromosomes and the daughter cells only end up with one set of chromosomes when the entire process is complete.
How does the fertilization affect the menstrual cycle?
Fertilization would be when conception occurs, if the fertilized egg implants itself in the uterus lining this is when pregnancy occurs and thus the menstrual cycles stop. Although fertilization doesn't always result in pregnancy, and pregnancy can miscarry at any point.
