What hormone is tested for in pregnancy tests?
A. progesterone hormone
B. hCG hormone
C. estrogen hormone
D. follicle stimulation hormone
E. luteinizing hormone
Answer: B
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In Drosophila melanogaster there is a sex-linked gene for eye color that is found only on the X
chromosome. The allele for red eye color (Xw+) is dominant over the allele for white eye color (Xw). You examine a vial of 100 flies that are all offspring from a single genetic cross. You find both redeyed females and white-eyed females as well as both red-eyed males and white-eyed males. The genotypes of the parents were
a. Xw+Xw+; XwY. b. Xw+Xw; XwY. c. XwXw; Xw+Y. d. Xw+Xw; Xw+Y. e. XwXw; XwY.
The process of nitrification produces a form of nitrogen that is easily lost from soil through leaching
Indicate whether the statement is true or false
In which of the following ways are dendrites and axons similar?
A) The presence of branching B) both release neurotransmitters C) both have vesicles D) All of the above
Why is the total biomass of secondary consumers normally less than that of primary consumers?
What will be an ideal response?