Lab #5RatTestisacatovary Sides 1. What do you observe about the location and ori
ID: 146951 • Letter: L
Question
Lab #5RatTestisacatovary Sides 1. What do you observe about the location and orientation of the spermatozoa in the cell 2. What observations can you make about the cells on the internal periphery of the testicular structure? 3. What are some observations about the cat follicle? What is happening within the large cell surrounded by the follicle? 5. 4. Why is this cell so uniquely much larger than the others? Lab 5 Grasshop2er testis squash sl 1. When do you see a nucleolus? 2. How many chromosomes are associated with the nucleolus (nucleoli)? 3. How does the number of chromosomes associated with nucleoli relate to secondary constrictions? 4. lides - Attempt to answer the following What happens to the nucleoli as cell goes through Prophase 1? When does it disappear and re-appear in Meiosis 1? Meiosis l1? 5. Determine the diploid and haploid chromosome number for the species used for student squashes. 6. Determine the number of secondary constrictions, hence the number of clusters of ribosomal RNA genes 7. Determine the types of chromosomes found within this species. 8. What happens when a haploid cell undergoes mitosis (or karyokinesis) with or without cytokinesis?Explanation / Answer
LAB #5
1) we can observe sperm mortality as an orientation which can be effected by distrubances in testicular spermatogenensis or by effects on epididymis.
2)it has carried with close associaation with sertol cella,the only somatic cells of seminiferous epithelium which are responsible for providing peripheral support.
3)polyovular follicles.
4)graffian follicles can be structurally as heterogenous of relatively large follicles that display an antrum containing folliclular fluid.
5)indivisual intract antral follicles from adult female cats form a LH harmone expansion.
5)
1)in prophase,
leototene stage nucleus found at periphery.
2)zygotene,
homologous chromosomes pair by a process called synapsis.
3)arranged in a manner of synaptonemal complex which facilitates crossing over.
8)seperation of homologous chromosomes.
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