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BIO 351 Module 2 Test 2025 Questions and Answers 100% Pass

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BIO 351 Module 2 Test 2025 Questions and Answers 100% Pass Which of the following occurs for the first time in pachytene prophase I of meiosis? - Synapsis and crossing over occurs Synapsis only occurs during meiosis, which of the following accurately describe this event? - Formation of a bivalent on specialized protein structure The Tasmanian devil, Sarcophilus harrissi, has 14 chromosomes. If nondisjunction of chromosome 5 occurs in meiosis I, which of the following best describes the n of the resulting gametes? - Two germ cells will be n=8 and two will be n=6 Above is karyotype of your patient. Which of the following BEST describes what you would tell this patient's parents? - This is a 48 XXY, two extra chromosomes You have made a transgene that expresses green fluorescent protein (GFP) in spermatogonia only. If you are examining a transverse section of the testes where would you expect to find GFP positive (GFP+) cells? - Associated with the Sertoli cells in the seminiferous tubule. The switch from mitosis to meiosis in spermatogenesis is regulated by _____ levels of _______ and this is induced by _________. Fill in the blanks. - low, glial cell derived neurotrophic factor (GDNF), follicle stimulating hormone (FSH) Spermatozoa nuclei are transcriptionally silent. Which of the following BEST explains this? - Replacement of histones with protamines

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BIO 351 Module 2 Test 2025 Questions
and Answers 100% Pass

Which of the following occurs for the first time in pachytene prophase I of meiosis? -
✔✔Synapsis and crossing over occurs

Synapsis only occurs during meiosis, which of the following accurately describe this
event? - ✔✔Formation of a bivalent on specialized protein structure

The Tasmanian devil, Sarcophilus harrissi, has 14 chromosomes. If nondisjunction of
chromosome 5 occurs in meiosis I, which of the following best describes the n of the
resulting gametes? - ✔✔Two germ cells will be n=8 and two will be n=6

Above is karyotype of your patient. Which of the following BEST describes what you
would tell this patient's parents? - ✔✔This is a 48 XXY, two extra chromosomes

You have made a transgene that expresses green fluorescent protein (GFP) in
spermatogonia only. If you are examining a transverse section of the testes where
would you expect to find GFP positive (GFP+) cells? - ✔✔Associated with the Sertoli
cells in the seminiferous tubule.

The switch from mitosis to meiosis in spermatogenesis is regulated by _____ levels of
_______ and this is induced by _________. Fill in the blanks. - ✔✔low, glial cell derived
neurotrophic factor (GDNF), follicle stimulating hormone (FSH)

Spermatozoa nuclei are transcriptionally silent. Which of the following BEST explains
this? - ✔✔Replacement of histones with protamines




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