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Oogenesis
The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase.
Cell Division
Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons:
Illustration of stages in Meiosis 1 with 10 chromosomes, explain briefly
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- Briefly explain why there is no interphase in between Meiosis I and Meiosis II.10:10 E ← sisAndMeiosis.docx FREE EDIT PDF FREE CONVERT PDF TO WORD 2. Why are chromosomes important? 3. How are meiosis I and meiosis II different? 1. What is the state of DNA at the end of meiosis I? What about at the end of meiosis II? 4. Why do you use non-sister chromatids to demonstrate crossing over? 7. Identify two ways that meiosis contributes to genetic recombination. 10. P FREE PDF FILLER 5. What combination of alleles could result from a crossover between BD and bd chromosomes? 8. Why is it necessary to reduce the number of chromosomes in gametes? 6. How many nuclei are present at the end of meiosis II? How many chromosomes are in each? a. Sperm Cell b. Egg Cell AP_5 c. Daughter Cell from Mitosis ON 5G I 9. Blue whales have 44 chromosomes in every cell. Determine how many chromosomes you would expect to find in the following: d. Daughter Cell from Meiosis II COUS ra PAGE 10... FREE CONVERT JPG TO PDF X OeScience Labs, 2016Briefly explain why sister chromatids remain together in anaphase I but separate in anaphase II of meiosis.
- The repeat expansion appears to occur during meiosis but not mitosis. Why mightthis be true?Sketch a comparison of Metaphase Mitosis and Metaphase I Meiosis (diploid:8 chromosomes n=4) - Be sure to number the chromosomes and use a “P” for paternal and “M” for maternal.Picture name - Tradescantia spathacea meiotic cell. HPO (400x)Shown below are photomicrographs of Rhoeo tradescantia cells undergoing meiosis. Answer the following question for each of the photomicrographs: Identify the cytogenetic abnormality observed (ex. ring, chain, laggard, bridge). Identify the meiotic stage in which these aberrations are observed (as shown in the photomicrograph). Explain how these aberrations are formed and relate to the possible causal mutation(s). Will this result to sterile and/or fertile gametes? Explain.
- Describe the differences in the activity of the homologouschromosomes in prophase and metaphase of meiosis I andmitosis.Meiosis Card Sort- Write the letter for each stage in the correct orderBy not explaining the stages,Briefly explain the difference between mitosis and meiosis with reference to the parent cell and the final cells that will form
- drawings of metaphase I,telophaseI, and telophase II for meiosis of AaBb. the genes are not linked, and there is no crossing overSegregation in meiosis I produces chromosomes lacking Telomeres Centromeres Short arm All of the aboveThe arrangement of homologs during metaphase of meiosis I is arandom process. In your own words, explain what this means