9:38 PM Sprint LTE lab015exp001.doc Population Genetics Note: In the following e

ID: 134408 • Letter: 9

Question

9:38 PM Sprint LTE lab015exp001.doc Population Genetics Note: In the following experiments on gene pool, gene frequency, and genetic diversity, assume there are four alleles for color and that they are all homologous. Experiment 1: Genetic Variation Genetic variation is simply the genetic difference within, or between populations in the gene pool, and/or gene frequency. Consider the following two populations of butterflies (Figure 2): ????? ?? Figure 2: Butterfly populations. Assumptions: Both populations contain the same four colors of butterflies, thus the gene pool is the same. However, the distribution of colors within that population is different, thus their gene frequencies are different. Materials Blue Beads Yellow Beads Red Beads (2) 100 mL Beakers Green Beads (2) 230 mL. Beakers Permanent Marker Procedure: 1. Pour 50 blue beads and 50 red beads into a 250 ml beaker. Without looking, randomly select 50 beads from the 250 mL beaker and place them in a 100 mL beaker. Label this beaker as Beaker #1 2. Pour 50 green beads and 50 yellow beads into a second 250 mL beaker Without lookina. randomlv take 20 beads from the 250 ml beaker and Open With Print

Explanation / Answer

The gene pool is defined as the different individuals which are present in a population. While gene frequency is defined as the proportion of each allele in the population.

50% B

50% R

48%B

52% R

50% Y

50% G

48% Y

52% G

The gene pool of beaker#1 is 24 blue, 26 red.

The gene pool of beaker#2 is 24 yellow, 26 green.

the gene frequency of beaker#1 is 1: 0.92.

the gene frequency of beaker #2 is 1: 0.92.

The genetic variation between these populations is almost complete variation 1:1.

PARENT#1 BEAKER#1 PARENT#2 BEAKER#2 GENE POOL BB/RR BB/Rr YY/GG YY/Gg GENE FREQUENCY