Lab: Natural Selection-Standard Bio 4.2 — Unit test Answers
Carlos is collecting data about the length of earthworms in his backyard. The shortest worm he found is 4 inches long; the longest worm is 8 inches long. If most of the worms are either short or long, which type of distribution is displayed in the population?
Read this passage about global fishing.Global consumption of large fish has led to an exploitation of fish populations. Overfishing has led to a decline in the populations of many species of large fish including North East Arctic Cod. The graph below shows the decline in the cod population.As the human population grows and countries continue to develop, the demand for large fish has been steadily increasing. Unfortunately, the average size of the cod has decreased because the fishing nets were designed to catch the large fish and the smaller individuals could escape more easily.What is most likely happening to the genetic variation of the population of North East Arctic Cod?
Which factors affect natural selection?
Consider the cladogram.According to the cladogram, which characteristic was used to separate bony fish from amphibians?
Why do a chicken embryo and a cow embryo look very similar even though the adults do not?
What will happen to the frequency of the recessive allele for the HbS gene when there is an outbreak of malaria?
A feature in the early hominid was her apelike shoulders and forelimbs, but a pelvis that indicated that most of her body weight lay above her pelvis. Which best describes the fossil?
In 1998, paleoanthropologist Rick Potts published an article in The Yearbook of Physical Anthropology, a peer-reviewed journal. The article was titled “Environmental Hypotheses of Hominin Evolution.” Isabel wonders if she can cite this article as a valid scientific reference. Which statement below best answers her question?
The fossil record shows that the average size of black bears was large during cold glacial periods and got smaller during warmer time periods. What is this an example of?
Which of these are most likely homologous structures? bat wing dragonfly wing Tyrannosaurus arm
In rock layers, jellyfish fossils are found lower than trilobite fossils, and trilobite fossils are found lower than ammonite fossils. What can be determined from this information?
A primate species with a brain size of 1200 cc is discovered. From the information in the graph, what can be predicted about this species?
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