Reproduction
Extra Credit
There are three parts to this Online Extra Credit Activity.
1. Windows on the Womb
Explore the Windows on the Womb online interactive activity by clicking here.
Briefly describe each of these screening tests used during pregnancy. When in the pregnancy can each be used?
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AFP
Full name of technique:
When used:
Description:
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Amnio
Full name of technique:
When used:
Description:
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CVS
Full name of technique:
When used:
Description:
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Doppler
Full name of technique:
When used:
Description:
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Echocardiography
Full name of technique:
When used:
Description:
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MRI
Full name of technique:
When used:
Description:
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NT Scan
Full name of technique:
When used:
Description:
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Ultrasound
Full name of technique:
When used:
Description:
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2. How Cells Divide
Explore the How Cells Divide: Mitosis vs. Meiosis online interactive activity by clicking here.
a. What are some of the major differences between mitotic cell division and meiotic cell division?
b. What are some of the major similarities between these two processes?
c. Why MUST meiosis (rather than mitotis) occur during the production of gametes?
d. During Prophase 1 of meiosis, enzymes cut sequences of DNA from the chromosomes. What happens to them?
e. What is a major difference between meiotic division in sperm cells and meiotic division in egg cells?
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3. Sex Determination
Explore the How Is Sex Determined? online interactive activity by clicking here.
a. At approximately what time during embryonic development does the male and female system begin to differentiate?
b. What is the role of the SRY gene in determining sex of the embryo? On what chromosome is it found?
c. Primitive germ cells migrate to the genital ridge from where?
d. Follow the male developmental pattern. What does each of these structures develop into in the male?
Phallus
Urethral groove
Labioscrotal area
Sex cords (primary)
Wolffian duct
Mullerian duct
e. Follow the female developmental pattern. What does each of these structures develop into in the female?
Phallus
Labioscrotal area
Sex cords (cortical)
Mullerian duct
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Use your written notes and answers to complete
the online quiz X Repro on WebCT.
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