Primary sex characteristics are those
a. structures that do not involve reproductive structures.
b. such as breast development and deepening of the voice.
c. that begin to develop during primary or elementary school.
d. structures that make reproduction possible.
d
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The ____ houses the blood vessels that join the embryo and its mother
a. umbilical cord b. amnion c. germ disc d. mesoderm
According to the APA code of ethics, deception in research is only justified if the scientific, educational, or applied value of the study is clear, and there is no way to answer the research questions adequately without deceiving the participants
Indicate whether the statement is true or false
The skin receptors that sense skin stretching are the
a. Merkel's disks. b. Meissner's corpuscles. c. Ruffini's endings. d. Pacinian corpuscles.
Which statement is true with respect to evolution?
A. "If you don't use it, you lose it." B. Evolutionary success is assessed by the number of one's offspring surviving to reproduce. C. Evolution benefits the species, in the long run. D. Evolution benefits the individual.