You are studying a population of beetles of size N = 3000. During a one-month period, you record 400 births and 150 deaths. Considering the estimate of r from these data, project the population size in 6 months
A. 2.5 × e14
B. 4500
C. 4945
D. 2160
C
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If a population has three codominant color alleles, how many phenotypes are possible?
What will be an ideal response?
Answer the following statements true (T) or false (F)
1. More conservation spending has led to greater recovery of black rhinoceros numbers. 2. The United States contains at least one biodiversity hot spot. 3. The passenger pigeon went extinct due to an introduced parasite. 4. The number of extinctions of birds and mammals has gone up as human populations have increased. 5. The introduction of avian malaria to Hawaii was responsible for the extinction of almost half of Hawaii's native birds.
The volcanic island Selkirk arose from the North Atlantic off Iceland in 1948. The first organisms to start living there are said to be ________
A) central species B) climax species C) pioneer species D) rogue organisms
Allopatric speciation occurs because a population
A. becomes geographically isolated and undergoes genetic change. B. becomes extinct and is replaced by a population of a different species. C. shows little genetic change from generation to generation. D. experiences hybrid sterility. E. merges with another population of the same species.