Biological Evidence and the Fossil Record — Unit test Answers
A student argues that two species of birds are the same species because they have similar body structures, similar DNA, and similar beaks. Another student argues that the birds are different species because they have different color patterns and have a different mating season. Which piece of evidence supports the second student's argument?
Darwin’s finches evolved on an island. What is the main reason that islands often provide good examples of evolution?
Which factors affect natural selection?
What is most likely to happen to a population of mice that becomes isolated on an island?
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?
Consider the cladogram.According to the cladogram, which characteristic was used to separate bony fish from amphibians?
It can be seen on a cladogram that modern birds and reptiles share a common ancestor. Select the piece of evidence that best supports this idea.
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?
Why do a chicken embryo and a cow embryo look very similar even though the adults do not?
Consider the group of giraffes in the image below.Which statement about the giraffes explains their evolution based on Charles Darwin’s main points?
Fossils provide scientists with evidence that allows them to hypothesize how living organisms have evolved over time. Tiktaalik roseae was a unique organism that has been nicknamed the “fishapod” because it is believed to be a species had traits of both fish and tetrapods, the first four-legged animals.Which evidence would scientist use to make the connection between ancestry of fish and tetrapods using Tiktaalik roseae?
What hypothesis did Darwin investigate by studying the breeding of pigeons with distinctive traits?
Which of these are most likely homologous structures? bat wing dragonfly wing Tyrannosaurus arm
What will happen to the frequency of the recessive allele for the HbS gene when there is an outbreak of malaria?
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?
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?
These notes were taken during a class about biological evolution, but the subject title is missing. -results from immigration -new genes brought into a population -variation in a population increasesWhat do the notes describe?
A founding population of lizards arrives on an island. Which type of isolation would most likely result in this population becoming a new species?
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