In a population of 2400 long horn sheep, 400 males and 750 females breed each season. What percentage of the actual population is the effective population size?
A. ~48%
B. ~43%
C. ~27%
D. ~65%
E. ~17%
B. ~43%
Ne=(4*450*700)/(450+700)=1,200,000/1150=1043.48
1043.48/2400=0.4347, or about 43%
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A(n) ____ has both biotic and abiotic components
a. population b. community c. ecosystem d. species e. genus
If you are exposed to ancient Peruvian art for the first time and experience some difficulty trying to figure out the meaning and quality of the art, you would be forced to simply examine the specific elements of the art since you do not have any background cultural information to use as a context in understanding the art. This would be an example of
a. bottom-up processing.
b. top-down processing.
c. left-right processing.
d. right-left processing
Nuclear membrane reappears during
A. Metaphase B. Prophase C. Anaphase D. Interphase E. Telophase
The Pax6 gene codes for a transcription factor that initiates differentiation of cells that ultimately form the eye. Suppose that a researcher added an activator for the Pax6 gene to embryonic cells that are in the process of forming legs in Drosophila
What do you think the researcher will observe? A) Legs and eyes will develop normally. B) Legs will develop where the eyes normally develop. C) Eyes will develop where the legs normally develop.