Suppose a starting population contained six individuals. Each pair of individuals had a different genetic makeup (genotype) from the others (genotypes: G1, G2, and G3). The genotypes vary with respect to reproductive rate and offspring survival. Suppose G1 has 8 offspring that survive to reproduce, G2 produces only 4 surviving offspring over its lifespan, and G3 leaves 12 surviving offspring.
a) If the average individual produces 8 offspring by the end of its lifespan, will the reproductive differences among genotypes alter the population growth rate?
b) How would the reproductive differences among genotypes alter the genetic composition of the population by T9? And by T500? (Assuming at T0 we start with one individual of each genotype.)
c) Suppose that the genotypes have the same birth rates as shown above at low density, but genotypes 1 and 3 experience greater effects of density dependence on birth rate than 2. What might happen to the relative frequency of this genotype by T500?
Suppose a starting population contained six individuals. Each pair of individuals had a different genetic makeup (genotype) from the others (genotypes: G1, G2, and G3). The genotypes vary with respect to reproductive rate and offspring survival. Suppose G1 has 8 offspring that survive to reproduce, G2 produces only 4 surviving offspring over its lifespan, and G3 leaves 12 surviving offspring.
a) If the average individual produces 8 offspring by the end of its lifespan, will the reproductive differences among genotypes alter the population growth rate?
b) How would the reproductive differences among genotypes alter the genetic composition of the population by T9? And by T500? (Assuming at T0 we start with one individual of each genotype.)
c) Suppose that the genotypes have the same birth rates as shown above at low density, but genotypes 1 and 3 experience greater effects of density dependence on birth rate than 2. What might happen to the relative frequency of this genotype by T500?
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