BIOL 404-Exam 4-Reproduction 5
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What is the Pachytene step?
The step in prophase I where recombination occurs, increasing genetic diversity
What step in meiosis creates greater diversity?
Pachytene of prophase I
What are the five stages of Prophase I?
Leptotene, Zygotene, Pachytene, diplotene and Diakinesis are steps in what process?
Prophase I of Meiosis
What are precursor cells to meiosis?
What step in meiosis is reductionary?
What step of meiosis do you reduce the number of chromatids per cell?
What step of meiosis do you reduce the number of chromosomes per cell?
What are the three parts of a sperm?
- Head piece
- Tail (Flagellum)
How would you describe the movement of the sperms flagellum?
What is the name of the sperm head that contains digestive enzymes for accessing the ovum?
Where is the nucleus found in the sperm?
In the head
What cellular organelles line the sperms flagellum?
How long do sperm live in the reproductive tract?
What do sperm do during the 1-2 days they are in the reproductive tract?
Continuously move towards the ovum
What two hormones are controlling Seritoli cells?
What two hormones are driving spermatogenesis?
FSH and Testosterone
During hot conditions, what would you expect to change in male reproduction?
Decreased fertility and spermatogenesis errors
What connects Sertoli cells?
What would you like to do?
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