What is the effective population size of an island population of parrotsconsisting of 30 males and 30 females, in which only 10 of the malesbreed?a. 10 b. 20 c. 30 e. 60 d. 40
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What is the effective
consisting of 30 males and 30 females, in which only 10 of the males
breed?
a. 10
b. 20
c. 30
e. 60
d. 40
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- Analyze the graph and identify some factors that may contribute to the rotifer population leveling off in the absence of water fleas. a. 1800 b. 4200 c. 0 d. 3000What do you think would happen to the population of blue whales after hunting them was banned? A. There was a substantial increase in whale numbers. B. There was a slight decrease in population numbers. C. There was no effect.What happened to large animals in the areas where our species migrated? A. We domesticated them soon after we migrated into their area B. They died out soon after we migrated into their area C. Nothing happened to large animals when we migrated into their territories D. They increased in number soon after we migrated into their area
- Biology Practice #2 Question Changes in the Florida Panther Population Florida panthers are a subspecies of cougars that live in the wetlands and forests of southern Florida. They are strict carnivores. Their diet consists mostly of deer, wild hogs, and livestock. Florida panthers need a large habitat in order to successfully hunt, reproduce, and raise their young. During the last century, the Florida panther population has experienced habitat fragmentation due to the construction of roads, urbanization, mining, and agriculture. This fragmentation has led to an increase in inbreeding within their population. Inbreeding occurs when closely-related animals mate and produce offspring. Inbred animals have a higher risk of inheriting genetic diseases, which often reduces their survival or ability to reproduce. 1995 Population size = 26 To conserve the population of Florida panthers, a team of scientists introduced eight Texas panthers to Florida in 1996. Texas panthers are a closely related…Which type of mimicry involves multiple species with similar warning coloration that are all toxic to predators? a. Batesian mimicry b. Müllerian mimicry c. Emsleyan/Mertensian mimicry d. Mertensian mimicryA researcher who is interested in the number of individuals in a population of black bears and their movement patterns would most likely use which method? A. Area-based counts B. Point sampling C. Line transects D. Surveys for black bear tracks E. Mark-recapture
- What is the greatest source of genetic variation in plant and animal populations? a. Geographic variation b. Recessive masking in heterozygotes c. Selection d. Sexual reproductionWhich of these is the least acceptable explanation for how an altruistic gene might spread in a population? a. Selection for a gene that benefits the individuals’ relatives b. Selection for helping individuals who might return the favor c. Selection for genes that benefit the species d. Selection for groups that are more cooperative than other groupsWhich two extinction risks may be a direct result of the pet trade? a. climate change and exotic species introduction b. habitat loss and overharvesting c. overharvesting and exotic species introduction d. habitat loss and climate change
- If populations of white rhinoceros (Ceratotherium simum) continue to decline, one approach to prevent extinction would be captive breeding. How does this process work? a. The remaining animals are moved into captivity to try to increase the population, after which they are reintroduced into the wild. b. The remaining animals are moved to a national park. c. The remaining animals are taken to the largest zoos so more people can see theam. d. A few individuals are moved to an outdoor enclosure to ensure that mates are available.Newborn young would fall under which category of a population’s age structure? a. Para-reproductive stage b. Reproductive stage c. Pre-reproductive stage d. Non-reproductive stage e. Post-reproductive stagehichstatement about snowshoe hare and lynx populations in boreal Canada is false?a.Lynx are not the only important predator of snowshoe hares.b.Lynx and hare populations both oscillate repeatedly, with a similar period.c.Snowshoe hares rarely deplete their food supply enough to affect theirpopulation biology.d.Trapping records kept by non-scientists can provide useful records ofhare population sizes.e.Field experiments imply that hare cycles depend both on the hares’ foodand their predators.