In which group is parthenogenesis a normal event?
- sea stars
Genetically unique individuals are produced through ________.
- sexual reproduction
External fertilization occurs in which type of environment?
The process of gastrulation forms the _______.
- germ layers
Which of the following gives rise to the skin cells?
- none of the above
Sperm are produced in the ________.
- seminal vesicles
- seminiferous tubules
- prostate gland
Which female organ has an endometrial lining that will support a developing baby?
- labia minora
Which hormone causes FSH and LH to be released?
Nutrient and waste requirements for the developing fetus are handled during the first few weeks by ________.
- the placenta
- diffusion through the endometrium
- the chorion
- the blastocyst
Which hormone is primarily responsible for the contractions during labor?