Multiple Choice
In humans, identical twins are possible because
A) cytoplasmic determinants are distributed unevenly in unfertilized eggs.
B) extraembryonic cells interact with the zygote nucleus.
C) convergent extension occurs.
D) early blastomeres can form a complete embryo if isolated.
E) the grey crescent divides the dorsal-ventral axis into new cells.
Correct Answer:
Verified
Correct Answer:
Verified
Q8: The outer-to-inner sequence of tissue layers in
Q9: Pregnant women are often advised to supplement
Q13: If gastrulation were blocked by an environmental
Q16: Which of these animals is a diploblast?<br>A)jellyfish<br>B)sea
Q26: As cleavage continues during frog development, the
Q41: An embryo with meroblastic cleavage, extraembryonic membranes,
Q42: The pattern of embryonic development in which
Q62: Cells transplanted from the neural tube of
Q73: The least amount of yolk would be
Q91: Fertilization normally<br>A) reinstates diploidy.<br>B) follows gastrulation.<br>C) is