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- It is possible that an alternative mechanism for generating germ cells could have evolved. Consider meiosis in a germ cell precursor (a cell that is diploid but will go on to make gametes). If the S phase were skipped, which meiotic division (meiosis I or meiosis II) would no longer be required?Write short notes on the following: - The four basic types of chromosomal structure arrangements? - Aneuploidy illustrating non-disjunction in meiosis I and IIAssume a pericentric inversion occurred in one of two homologs prior to meiosis. The other homolog remains normal. During meiosis, what structure—if any—would these homologs assume in order to pair accurately along their lengths? a. V formation b. cruciform c. loop d. pairing would not be possible
- During polyembryony, if one embryo is formed from synergids and the other from nucellus, state the one that is haploid and the one that is diploid.If two sperm fertilize a single ovum the resulting zygote would be considered a ________. Group of answer choices haploid triploid aneuploidy diploid tetraploidAn organism has a haploid number of 36. What is the organism diploid number ?
- For a species with a diploid number of 18, indicate how manychromosomes will be present in the somatic nuclei of individualsthat are haploid, triploid, tetraploid, trisomic, and monosomicAn Ascus Contains which Products of a Single Meiosis?in the expermient of following chromosomal dna movement through meiosis, how many chromosomes were present when meiosis I started? How many nuclei are present at the end of meiosis ll? How many chromosomes are in each? What is the ploidy of the DNA at the end of meiosis l? What about at the end of meiosis ll? How are meiosis l and meiosis ll different? List two reason
- Strawberries are octoploid. Bananas are triploid. Kiwi fruits are diploid. How does ploidy level influence the amount of DNA in each cell?Sheep have a diploid number of 54 chromosomes. Complete the following table by stating the number of cells and the number of chromosomes at the end of each of the following stages of meiosis and mitosis.How does ploidy change in Meiosis I? How many cells are produced at the end of Meiosis I? How many cells are produced at the end of Meiosis II?