If only 20 males and 20 female grizzlies exist today, but only 10 of the males and 6 female breed, what are effective population size?

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#Question id: 3275

#Section 2: Evolution

When imbalances occur in the sex ratio of sexual species that have two sexes (that is, other than a 50:50 ratio), the members of the minority sex often receive a greater proportion of care and resources from parents than do the offspring of the majority sex. This is most clearly an example of ________.

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#Question id: 11174

#Section 2: Evolution

Why might a peahen choose to mate with a peacock with a long, gaudy tail?

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#Question id: 11772

#Section 1: Ecology

Which of the following statements correctly describes the relationship between growth and fecundity in an indeterminate organism?

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#Question id: 12155

#Section 2: Evolution

Under which of the following conditions do the mathematical models for competition tell us that coexistence of two competing species is most likely? 

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#Question id: 10646

#Section 1: Ecology

Four sampling unit of Area occupy by species having following number is 00, 20, 10, 20. What is abundance of that species?