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Which of the following is an example of genetic drift?
Here’s the desired answer:
A.) An earthquake kills 90% of the green beetles in a population of green, brown, and black beetles.
Here’s why it’s not great: the choice says nothing about how many of the other beetles are killed. If 90% of the brown beetles are killed and 90% of the black beetles are killed too, then allele frequencies haven’t changed and so there would be no genetic drift taking place as a result of the earthquake.
Rejecting the other responses:
B: That’s gene flow, formerly known as “migration.”
C: That’s directional selection, a subtopic of natural selection, which is a subtopic of selection.
D. That doesn’t seem to result in changes in allele frequencies, so that’s not evolution at all.
Solved: Question 6 Part A: Which Of The Following Are Exam – Answer: C. Both A) and C) are examples of genetic drift Explanation: In bottleneck effect, a population drastically reduces to a significantly smaller size over a short period of time. This can r view the full answer. Previous question Next question.Genetic Drift Occurred/Founder Effect: the few individuals left behind were the seals that passed on the specific gene pool. Natural Selection Occurred/Survival of the Fittest: only the strongest northern elephant seals survived in the 1800's and that restricted gene pool exists today.Genetic Drift Example. Genetic drift can be understood well with the following examples: The American Bison was once hunted to such an extent that it became endangered. The population which has recovered today show very little genetic variation. Let's take an example of a group of rabbits with brown fur and white fur, white fur being the
Genetic Drift Quiz | Biology – Quizizz – a. Gene flow increases the genetic distance between populations. b. Gene flow decreases the genetic distance between populations. c. Gene flow decreases the genetic variation within a population. d. Gene flow increases the genetic variation within a population. e. Gene flow results in the loss of genetic variation in a population.Genetic drift is a drastic change in gene frequency due to a natural calamity. Here, the long flashing fire flies are killed due to an earthquake leaving behind only medium and short flashing fireflies.What Is a Genetic Drift Example? In evolution, genetic drift refers to the change in the frequency of an allele in a population over time. It's a random shift in the occurrence of this specific gene variation that isn't caused by environmental factors. In simple terms, this allele randomly starts to become more or less common in a population. For example:
Genetic Drift – Meaning, Types, Causes, Example and FAQ – Which of the following is an example of genetic drift? A. An earthquake kills 90% of the green beetles in a population of green, brown, and black beetles. B. A green beetle travels from its population into a new population of entirely brown and black beetles.Q. Genetic Drift is more likely to happen in… Q. A virus killed most of the seals in the North Sea (e.g. dropped the population from 8000 to 800). In an effort to help preserve the species, scientists caught 20 of the remaining seals and used them to start a new population in the northwest Pacific Ocean.Genetic drift is one mechanism of evolutionary change. Which of the following best describes an example of genetic drift? A. A small population of frogs, which used to be brown and green, is now all green due to chance. B. Gazelles, which are preyed on by cheetahs, have gotten faster and more agile over time. C.