Bioquiz3
In humans, oogenesis is complete
after the nuclei of the sperm and egg fuse
From earliest to latest, the overall sequence of early development proceeds in which of the following sequences?
cleavage --> gastrulation --> organogenesis
If gastrulation was blocked by an environmental toxin, then
embryonic germ layers would not form
Diploidy is first reestablished following
fertilization
An advantage of internal fertilization over external fertilization is that:
internal fertilization prevents the drying out of gametes in a dry environment
The embryonic precursor to the human spinal cord is the
neural tube
In humans, the ___ of the sperm enters the oocyte
nucleus
Spermatogensis and oogenesis differ in that
oogenesis produces one egg and spermatogenesis produces four sperm