If pregnancy occurs, a layer of tissue associated with the embryo secretes the hormone ________, which maintains the activity of the corpus luteum in the ovaries of the mother
Fill in the blank(s) with correct word
hCG
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Describe the difference in temperature range between small bodies of water and open ocean areas. What adaptations do you expect to see in the animals living in either body of water?
What will be an ideal response?
Myelogenous leukemia is caused by a mutant tumor-suppressing gene. Indicate whether the statement is true or false
In your Drosophila laboratory, you find a larva that is missing segments Lb, T1, T2, and T3. This larva probably has a mutation in a ________ gene.
A. gap or segment-polarity B. segment-polarity C. gap D. maternal effect E. pair-rule
If after several generations all males have 12-point antlers, this development will have been due to:
A) founder effect. B) stabilizing selection. C) disruptive selection. D) directional selection.