Concept explainers
To review:
The benefit of conducting research on evolution in a population of short-lived organisms such as fruit flies.
Introduction:
Evolution is a process that occurs over many generations.
Explanation of Solution
Many generations have to go through selection (natural selection or artificial selection by scientists) for evolution to occur. If a particular trait gives an organism an advantage in survival, it will become common in the population. Organisms with a short lifespan are preferred for the study of evolution because such organisms reach maturity soon. Therefore, many generations of organisms can be included in the experiment. On the contrary, if an organism with a long lifespan were to be chosen for study, it would take years to perform the experiment.
As seen in the starvation experiment, the study of organisms with a short lifespan allows the researcher to include many generations in the experiment.
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Chapter 8 Solutions
What is Life? A Guide to Biology with Physiology
- Explain why genetic variation within a population is aprerequisite for evolution.arrow_forwardDiscuss different causes of speciation, in evolutionary biology.arrow_forwardWhich of the following examples from class show that a mutation can have evolutionary benefits? Group of answer choices C) Hox mutations that lead to legs developing on fruit flies where antennae should be A and B A, B, and C B) Hox mutations leading to limbs with digits forming from lobe fins A) Stickleback fish mutationarrow_forward
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- How can a shift in the proportion of genes in a population could lead to the evolution of a new species? Explain why evolution happens to a whole population rather than to a single individual.arrow_forwardA. Explain which force of evolution is seen here by a hybrid bird landing on an island that is not its home and breeding with the indigenous population. B. Explain which force of evolution randomly chooses an individual from a larger gene pool to form a new, smaller population with less genetic variety.arrow_forwardMake a concept map: What are the 4 types of evidence for evolution? Explain and upload pictures.arrow_forward
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