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Population Unit

Miguel Sanchez

Extra Credit

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Across
1.Having male and female reproductive organs on separate plants.
4.Condition among birds and mammals of being hatched or born usually blind and too weak to support their own weight.
8.Organism possesing the reproductive organs of both sexes.
9.In animals, mating and maintenance of a pair bond with only one member of the opposite sex at a time.
16.A population of genetically identical individuals resulting from asexual reproduction.
18.Natural selection arising through preference by one sex for certain characteristics in individuals of the other sex
19.Refers to the reproductive strategy of an organism.
20.A group of individuals of the same species living in a given area at a given time.
Down
2.A population that is part of a larger population.
3.Acquisition by an individual of two or more mates, none of which is mated to other individuals.
5.The number or proportion of individuals in each age group within a population.
6.Member of one sex mates with more than one member of the opposite sex, and the relationship terminates after mating.
7.Density measured in terms of the number of individuals per area of available living space.
10.Having male and female reproductive organs separated in different floral structures on the same plant.
11.A population broken into sets of subpopulations held together by dispersal or movements of individuals among them.
12.In unstable or unpredictable environments, r-selection predominates as the ability to reproduce quickly is crucial.
13.Chemical substance released by an animal that influences behavior of others of the same species.
14.The selection of combinations of traits in an organism that trade off between quantity and quality of offspring.
15.In birds, hatched with down, open eyes, and ability to move about.
17.Communal courtship area males use to attract and mate with females.

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