To ensure that the correct number of chromosomes from the father are joined with the mother's chromosomes,
A) only one sperm will survive the journey through the uterus and into the fallopian tube.
B) more than one ovum is ovulated and fertilized during each menstrual cycle.
C) the fallopian tube closes briefly after the entrance of multiple sperm cells.
D) a chemical reaction seals the ovum's outer membrane after penetration by one sperm cell.
D
Psychology
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"An organized, coherent set of ideas that helps us to understand, to explain, and to make predictions" is known as a:
a. scientific law b. domain c. theory d. phenomenon
Psychology
Freud's topographic or depth model included which of these concepts as the structures of the mind?
A) The preconscious B) The conscious C) The unconscious D) All of the above
Psychology