unit test 1 Flashcards
why were the Galapagos islands of a particular interest to Darwin?
- Very few people had documented scientific findings from the Galapagos
- Species varied from island to island
- They contained few species but a high variation within populations of species
- They were volcanic islands that were found and easy to study
What mechanisms led to the speciation of Tiktaalik?
- Competition
- Variation
- Natural selection
What evidence supports the fact that tetrapods and fish are closely related?
- The embryos of modern fish and tetrapods look similar
- Both modern fish and tetrapods are vertebras
- The DNA of modern fish and tetrapods are similar
Monarch butterflies migrating to warmer climates in the fall to survive is an example of…
Behavioural adaptation
Over millions of years, the blowhole of the whale has moved from the tip of its nose to the top of its head. This is an example of…
Structural adaptation
What type of adaptation does the arctic fox use to avoid predation?
Camouflage
The male birds of paradise will do a fancy dance to attract a mate. What type of adaptation is this?
Behavioural
A strain of pneumonia is showing antibiotic resistance and is becoming more common each year. This is an example of…
Physiological adaptation & directional selection
Tiktaalik evolved from an aquatic species to a land dwelling species. This is an example of…
- Divergent evolution
- Adaptive radiation
- Natural selection
Baby birth weight has remained between 6-8 pounds for hundreds of years. This is an example of…
Stabilizing selection
What best explains the evolution of a long colourful tail in peacocks?
Sexual selection
The finches in the Galapagos islands have evolved over thousands of years to have different beaks specialized to collect foods in their environments. This is an example of…
- Divergent evolution
- Adaptive radiation
- Speciation
The migration of butterflies, birds and caribou is an example of a…
Behavioural adaptation
The elephant hawk moth will look like and behave like a snake in its larval stage to prevent predation. This is an example of
- Behavioural adaptation
- Structural adaptation
A population of sea stars are found in a range of sizes, from small, to large. Over time, however, the average size of the population shifts so that almost all sea stars in the population measure 12cm across. This is an example of…
Stabilizing selection
