Lesson Worksheet: Speciation Biology
In this worksheet, we will practice explaining the process by which new, separate species can arise from a founding population.
Which scientist spent many years gathering evidence from natural populations to support the theory of speciation?
If a population cannot adapt to a new environment, it becomes extinct. Which of the following correctly defines extinction?
- AMost individuals of a species are dead.
- BThe genetic variation of a population is drastically reduced.
- CAll individuals of a species are permanently lost.
- DThe death rate of a population is higher than the birth rate.
- EA species is at risk of not having any surviving members.
In speciation, what conditions change and provide the selective pressure?
Fill in the blanks: In isolated populations, different mean different are advantageous and are therefore selected for.
- Agenomes, genes
- Balleles, environments
- Cconditions, environments
- Denvironments, alleles
- Ealleles, genes
What is the process by which two species evolve from a single-origin species due to isolation?
In speciation, which of the following options best describes when the separated population and the original population are considered to be two distinct species?
- AWhen individuals from each group specialize to eat a certain food source
- BWhen individuals from each group look different enough
- CWhen there has been one set of offspring from every individual in the new group
- DWhen individuals from each group can no longer reproduce to create fertile offspring
- EWhen individuals from each group can no longer mate
Which scientific term is given to the following definition: A group of similar organisms that reproduce to give fertile offspring?