Mitosis and meiosis are both important processes of cell division in the life cycle of a sexual organism.Discuss why both processes are necessary?
Q: If a single diploid somatic cell with 18 chromosomes undergoes meiosis and produces sperm, the…
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Q: meiosis leads to a diploid cell in a life cycle, true or false
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Q: Although 2 cells called gametes fuse, the product formed is a single cell called zygote. Justify.
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Q: meiosis is often termed as a reduction division. what is reduced and when is it reduced?
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Q: What features of meiosis are important in sexual reproduction
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Q: Why must a gamete have only one-half the number of chromosomes found in body cells?
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Q: Oogenesis results in 1 gamete per meiotic division. TRUE OR FALSE
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Q: If nondisjunction takes place in a spermatocyte in the second meiotic division and the sperm…
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Q: Most cells in a sexually reproducing organism have two sets of chromosomes. Explain this observation…
A: Those organisms who have two sets of chromosomes in their cells are diploid and those in which only…
Q: A diploid species has four chromosomes per set for a total of eightchromosomes in its somatic cells.…
A: A Diploid celled species have two homologous copies of each chromosome, each copy is from the each…
Q: What are the possible abnormal gametes the male can produce with non-disjunction occuring in Meiosis…
A: Meiosis is the reduction of cell division in which the chromosome number of the parental cell…
Q: In Cell division of sex cell; why it is necessary to undergo or complete the Meiosis I and Meiosis…
A: Answer :- In cell division of sex cell it is necessary to undergo or complete the Meiosis I and…
Q: What would happen,if meiosis in humans always produced diploid gametes? Explain?
A: Meiosis is a special type of cell division occur in the germ cells of sexually reproducing…
Q: gametes (egg or sperm cells), where in the body would you expect this cell to be located?
A: Gamete production takes place for sexual reproduction.
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Q: What are the major differences between mitosis and meiosis? Explain this both in terms of the…
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Q: Meiosis ensures the even distribution of chromosomes to the daughter cells. Why does meiosis can…
A: The daughter cells created by mitosis are indistinguishable, though the daughter cells delivered by…
Q: During spermatogenesis, is there any difference in outcome between first- and second-division…
A: Non disjunction-It occurs when pairs of homologous Chromosomes or sister chromatids fail to separate…
Mitosis and meiosis are both important processes of cell division in the life cycle of a sexual organism.
Discuss why both processes are necessary?
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- What are the major differences between mitosis and meiosis? Explain this both in terms of the different steps of each event and with regards to the final products of each event. Remember to mention the events which are unique to meiosis and why they are significant.The process of meiosis occurs during the cell cycle production and results in four unique diploid four identical diploid cells four unique haploid cells four identical haploid cells . To maintain the correct number of chromosomes in offspring, male and female gametes contain the same number half of the number twice the number of chromosomes as somatic cells. During fertilization, gametes fuse to form a diploid haplid cell called a zygote.Most sexual organisms are either male or female though some are hermaphroditic. In human beings and Drosophila (fruitfly), the sex of an individual is determined by the kind of sex chromosomes they possess. Males have two types of chromosomes, a big chromosome X and a small chromosome Y while females have only one kind, 2X or XX. The X and Y chromosomes segregate during the formation of mature spermatozoa (sprematogenesis) so that a mature sperm contains only either X or Y. What is the probability of getting an X-bearing sperm? A Y-bearing sperm? How many kinds of ova as to the kind of sex chromosome present can be produced? Determine the probability of getting a boy or girl. Show your calculations.
- Most sexual organisms are either male or female though some are hermaphroditic. In human beings and Drosophila (fruitfly), the sex of an individual is determined by the kind of sex chromosomes they possess. Males have two types of chromosomes, a big chromosome X and a small chromosome Y while females have only one kind, 2X or XX. The X and Y chromosomes segregate during the formation of mature spermatozoa (sprematogenesis) so that a mature sperm contains only either X or Y. What is the probability of getting an X-bearing sperm? A Y-bearing sperm? How many kinds of ova as to the kind of sex chromosome present can be produce? Determine the probability of getting a boy or girl. Show your calculations.A sperm cell from the fruit fly Drosophila melanogaster contains four chromosomes. How many chromosomes would be present in a spermatogonial cell about to enter meiosis? How many chromatids would be present in a spermatogo- nial cell at metaphase I of meiosis? How many would be present at metaphase II?If a cell with 24 chromosome pairs underwent meiosis, how many total chromatids would be in each gamete? What are three (3) differences between mitosis and meiosis?
- Meiosis is an important cellular process for organisms that reproduce sexually. Two lab partners (A and B) are shown this diagram of a meiotic cell and asked to identify its phase. Partner A believes that this cell is in prophase of the first meiotic division. Partner B believes that this cell has moved past prophase of meiosis I and is in a later phase of meiosis. Which partner is correct, and what evidence accurately would defend their belief? Partner A is correct. The chromosomes have clearly replicated during interphase and are beginning to decondense into chromatin. O Partner A is correct. The nuclear membrane is beginning to re-form and centrioles are beginning to migrate to opposite poles of the cell. Partner B is correct. Homologous chromosomes are no longer paired together, so the cell must be in first phase of meiosis II, not meiosis I. O Partner B is correct. The cell plate is beginning to form between the two centrioles, indicating the cell is actually in later phase of…Describe the final cellular products produced when a primary oocyte undergoes meiosis (I and II) in human females. four haploid oocytes 1 diploid oocyte and 3 polar bodies 1 haploid oocyte and 2 polar bodies two genetically identical daughter cells four genetically identical daughter cellsOogenesis is the process of female gamete (ovum or egg) production in animals. Spermatogenesis is the process of male gamete (sperm) production in animals. Although both processes produce gamete(s), there are distinct similarities and differences between the two. Compare and contrast oogenesis to spermatogenesis by drawing a diagram showing the two processes. In your hand-drawn diagrams, be sure to include when the processes of mitosis, meiosis I and meiosis II are occurring identify each germ cell structure and its ploidy highlight 4 differences between the two processes
- At what stage of mitosis can the kind and number of chromosomes be easily detected and determined? How does non disjunction in meiosis lead to numerical chromosomal aberration? If cell division during gametogenesis is non meoitic, what is its consequence to the future generations of diploid organisms? What is the relationship between meiosis and fertilization?A diploid cell has 4C genetic material and 16 chromosomes at the start of cell division. Identify the: (1) no. of chromosome per cell at S phase (2) no. of pairs of homologous chromosomes per cell at Metaphase 1 (3) no. of chromosomes per cell at Anaphase 1 (4) amount of genetic material per cell after Meiosis 2 (5) amount of genetic material per cell after Meiosis 1In a description of meiosis the terms ‘chromosome’ and ‘chromatid’ may be used. Distinguish between these two terms. There are 56 chromosomes in a mature elephant cell. If one of the elephants cells responsible for gamete production undergoes meiosis, how many chromosomes would be present in each cell after meiosis I, and then after meiosis II. Explain your reasoning.
