#Question id: 5551
#Unit 5. Developmental Biology
When the vertebrate embryo grows into a hollow ball, it is called a
#Question id: 5552
#Unit 5. Developmental Biology
Soon after gastrulation, dorsal ectodermal cells condense and form a tube called the _______________ tube.
#Question id: 5554
#Unit 5. Developmental Biology
Even in the absence of sperm, metabolic activity in an egg can be artificially activated by ________.
#Question id: 5555
#Unit 5. Developmental Biology
The formation of the fertilization envelope requires an increase in the cytosolic concentration of ________.
#Question id: 5687
#Unit 8. Inheritance Biology
The error in meiosis that produces a 47,XYY karyotype is best described by
#Question id: 5688
#Unit 8. Inheritance Biology
Which of the following are not cause of aneuploidy