Answer:
D) a genetic bottleneck
Explanation:
Genetic bottleneck refers to the sudden reduction in the population size due to some adverse climatic factors such as natural calamities. It changes the allele frequencies since the survivor population mostly have different allele frequencies than the original population.
In the given example, an earthquake kills 98% of the squirrels. The survivor population exhibits different allele frequencies for the gene responsible for the thickness of stripes. Therefore, it represents a genetic bottleneck.
Answer:
The answer is vertebrate.
Explanation:
Vertebrates are those animals that have a central spinal cord. Fish, Chicken and rabbit can be classified as vertebrates because they all have a spinal cord. The vertebrate is a big term that is further divided into different classes for example Fish, amphibians, mammals, avian, and reptiles,
Jack. A signpost is a non-living thing and non living things do not grow. Sam is an adult and he has stopped growing already. Jack is a child and will continue growing the next few years.
