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Briefly describe each of these screening tests used during pregnancy.  When in the pregnancy can each be used?

AFP

Full name of technique:

When used:

Description:

 

 

Amnio

Full name of technique:

When used:

Description:

 

 

CVS

Full name of technique:

When used:

Description:

 

 

Doppler

Full name of technique:

When used:

Description:

 

 

Echocardiography

Full name of technique:

When used:

Description:

 

 

MRI

Full name of technique:

When used:

Description:

 

 

NT Scan

Full name of technique:

When used:

Description:

 

 

Ultrasound

Full name of technique:

When used:

Description:

 

 

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?

 

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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