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
COPYRIGHT © 2025 BY SOPHIA BENNETT, ALL RIGHTS RESERVED 1
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
COPYRIGHT © 2025 BY SOPHIA BENNETT, ALL RIGHTS RESERVED 1
