Claim
Scenario 1 demonstrates genetic drift.
Evidence
In scenario 1, 50 organisms were placed in a container to represent the parent generation. Twentyfive of the 50 organisms were marked, and 25 were unmarked (50% marked, 50% unmarked).The marks on the organisms represent a trait, the unmarked organisms don’t have that trait. After that, roughly half of the organisms in the previous container were put in container 2, these represented the organisms that survived, also known as generation 2. In generation 2, it was apparent that there was a trait that was more prominent in the population than the other. For instance, one group had 21 marked and 10 unmarked organisms in generation 2. The marked organisms went from half the population to roughly two thirds of it. After this step, roughly half the organisms in container 2 were put into container 3, these organisms represented the organisms that had once again survived, or generation 3. By generation 3 there was a clearly visible trend that one trait was more distinguished throughout the population than the other. The same group had 4 unmarked and 10 marked organisms in generation 3. This was a 20% increase in marked organisms in the population from the parent generation. This pattern of one trait being more frequent than the other was visible throughout all of the groups.
Reasoning …show more content…
In generation 3, there are distinct signs of genetic drift. For example, one group had 8 unmarked and 3 marked organisms in generation 3. This pattern that was observed all throughout scenario 1 shows genetic drift because, by complete chance, the unmarked trait became the majority of the
Scenario 1 demonstrates genetic drift.
Evidence
In scenario 1, 50 organisms were placed in a container to represent the parent generation. Twentyfive of the 50 organisms were marked, and 25 were unmarked (50% marked, 50% unmarked).The marks on the organisms represent a trait, the unmarked organisms don’t have that trait. After that, roughly half of the organisms in the previous container were put in container 2, these represented the organisms that survived, also known as generation 2. In generation 2, it was apparent that there was a trait that was more prominent in the population than the other. For instance, one group had 21 marked and 10 unmarked organisms in generation 2. The marked organisms went from half the population to roughly two thirds of it. After this step, roughly half the organisms in container 2 were put into container 3, these organisms represented the organisms that had once again survived, or generation 3. By generation 3 there was a clearly visible trend that one trait was more distinguished throughout the population than the other. The same group had 4 unmarked and 10 marked organisms in generation 3. This was a 20% increase in marked organisms in the population from the parent generation. This pattern of one trait being more frequent than the other was visible throughout all of the groups.
Reasoning …show more content…
In generation 3, there are distinct signs of genetic drift. For example, one group had 8 unmarked and 3 marked organisms in generation 3. This pattern that was observed all throughout scenario 1 shows genetic drift because, by complete chance, the unmarked trait became the majority of the