What is the first stage of embryonic pattern development in Drosophila?
A. limb position
B. body axes
C. segmentation patterns
D. metamorphosis
B
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The amount of energy available to do work is called
A. activation energy B. free energy C. kinetic energy D. potential energy
Which one of the following correctly lists the sequence in which the plant cell wall is synthesized?
A. primary cell wall secondary cell wall middle lamella B. secondary cell wall middle lamella primary cell wall C. secondary cell wall primary cell wall middle lamella D. middle lamella primary cell wall secondary cell wall E. middle lamella secondary cell wall primary cell wall
ACTH (corticotropin)
a. is secreted by the posterior pituitary. b. has target cells in the autonomic nervous system. c. has target cells in the adrenal glands d. has target cells in the adrenal medulla. e. initiates the autoimmune response.
The 9:3:3:1 ratio is typical of a dihybrid cross in which complete dominance and independent assortment occur. What is the dihybrid ratio with independent assortment of polygenes?
What will be an ideal response?