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A population was observed to increase from 5000 to 6000 individuals in one year, What is the rate of increase? - Rate of increase = 6000/5000 Advantages of reproducing later in life? - More resources available for Individuals An allele that is advantageous early in life but will be deleterious l...

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  • August 11, 2024
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BIO 265 Exam 2 UH Manoa Justin
Walguarney
A population was observed to increase from 5000 to 6000 individuals in one year, What is the rate of
increase? - Rate of increase = 6000/5000



Advantages of reproducing later in life? - More resources available for Individuals



An allele that is advantageous early in life but will be deleterious later in life will be SELECTED because of
greater contribution of the early classes. TRUE OR FALSE? - TRUE



Another Simple Case assumption? - The rate at which a population increases is a simple multiple
of the number of individuals already present in the populations.Ex: Gen 1: 10 Individ Gen 2: 10 X 2
Indiviud Gen 3: 10 X 4 indivud



Antagonistic pleiotropy hypothesis - Individual genes can have multiple effects (pleiotropy), and
these can have antagonistic influences on fitness.



Apparent competition - two species that do not share any resources but whose numbers change
in relation to one another because of an indirect effect of a third species, typically a predator.



Are larger/bigger hatchlings at an advantage or disadvantage? - Typically at an advantage over its
smaller individuals.Bigger size shows that the female invested more into the offspring.



biological community - is an assemblage of populations of various species living close enough for
potential interaction.



Character displacement - is a tendency for species characteristics to become more different in
sympatric populations than in allopatric populations.

, Constraint on Life History. What is another trade off? - Number and size of offspring, and the
materials parents can invest in (Yolk, endosperm)Ex: twins weigh much less at birth



Difference between r and K selected species? - R-selected focuses on High production but low
quality of individual life whereas K selected species focuses on Increased quality of the individuals but
decreased reproduction



Difference between the differential form and integral form of population growth? - Differential
form (dN/dt=rN) finds the CHANGE in population size.Integral form (Nt=N0*e^rt) finds the actual new
population size.



Diffe A feeding guild - is any group of species that exploit the same food resource through a
similar method (e.g. grazers, predators of rodents, blood-sucking insects). Members of a guild are in
competition.

rence in r-selection and K-selection in Intra specific and interspecific competition? - R-selection:
Variable and often weak.K-Selection: Strong



Difference in r-selection and K-selection in Length of Life? - R-Selection: Short

K-Selection: Long



Difference in r-selection and K-selection in Mortality? - R-selection: Variable and unpredictable
(Happens frequently)K-selection: More stable and predictable (Not as often)



Different ways to describe a population? - 1)Growth Form 2)Density

3) Dispersion of individuals

4) Dynamics between years

5)Dynamics within a year

6) Age structure

7) Sex Ratio

8) Types of individuals

9) Population Links

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