Answer the following statements true (T) or false (F)
1. Mammalian eggs like those of humans undergo holoblastic cleavage and compaction during development.
2. The neural tube or spinal chord is derived from mesoderm.
3. The endoderm is a germ cell layer that tends to cover the embryo.
4. Fate mapping is a valuable tool to establish the type of cells derived from certain undifferentiated cells within an early embryo.
1. TRUE
2. FALSE
3. FALSE
4. TRUE
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A flap of tissue called the __________ directs air through the __________, the opening to the
__________ (windpipe). Fill in the blank(s) with the appropriate word(s).
Which extraembryonic membrane produces early blood cells and portions of the digestive tract?
a. yolk sac b. amnion c. chorion d. allantois
e. umbilical cordDamage to the (brain/heart/liver) is the primary result of fetal infection with Toxoplasma gondii
What will be an ideal response?
In a mating between individuals with the genotypes IAIB × ii, what percentage of the offspring are expected to have the O blood type?
A) 25% B) 100% C) 0% D) 75% E) 50%