Which of the choices lists the three phases of the ovarian cycle in the correct order?
A. follicular, luteal, ovulation
B. follicular, proliferative, secretory
C. luteal, ovulation, secretory
D. follicular, ovulation, luteal
E. luteal, secretory, ovulation
D. follicular, ovulation, luteal
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The two most important regulatory systems for the maintenance of homeostasis are ____
a. circulatory and nervous systems b. endocrine and circulatory systems c. lymphatic and circulatory systems d. nervous and endocrine systems e. lymphatic and circulatory systems
Contraction of the diaphragm ____
a. diminishes the volume of the thoracic cavity b. increases the volume of the thoracic cavity c. pushes the rib cage downward d. causes external intercostal muscles to relax e. decreases lung capacity
Why is it easy to measure allele frequencies in a codominant allele system?
A. Such systems are rare. B. Phenotypes are equivalent to genotypes. C. Most alleles are present in homozygous condition. D. They are present in a 1:2:1 ratio in all populations. E. None of these is true.
Segmentation genes in Drosophila act in which of the following orders?
A) segmental, helical, spherical B) pair-rule, transdeterminal, gap genes C) gap, pair-rule, segment polarity D) pair-rule, segment polarity, gap genes E) pair-rule, segment polarity, Hox genes