A population of birds has a large population size and isolated so no new birds are moving into the population. The birds do not practice any type of preference for mates, no new traits have been seen. However they are adapting for larger beak shapes because of the only food available for most birds are large seeds. Large beaks are becoming more common in birds.

Is this population of birds evolving or not?

Many different groups of organisms have wings, even though they do not share a recent common ancestor. This is because they evolved in environments with similar selective pressures. Wings are an example of a(n) ______________ structure.

Homologous structures and vestigial structures show evidence of

The female birds of paradise tend to look for the most colorful, best dancing males to make babies together.

Charles Darwin observed that finches of different species on the Galápagos Islands have many similar physical characteristics, this supports the hypothesis that these finches

What is speciation?

In a population of ladybugs, black bugs are more successful in escaping predators. Overtime, this gene becomes more popular in the population and the ladybug population loses its red color. This is an example of?

There was a forest fire that wiped out birch trees randomly and left a few dispersed throughout the forest. The surviving trees evolve overtime changing the gene pool. This is an example of?

The bottleneck effect and founder effect are results of

How do populations change due to genetic drift?

Which species is a common ancestor for species B and D?

Which two organisms are most closely related?

What do amphibians, birds, prosimians and humans all have in common? Check all that apply.

A scientist proposes that a certain species of bacteria has an unusually high rate of evolutionary change, allowing them to develop new adaptations relatively quickly. Which observation about the bacteria would most strongly support the scientist’s proposal?

Darwin proposed that the Galapagos Islands were settled by a small population of a single species of finches. This species was the ancestor of all the finch varieties that Darwin had observed on the islands. According to the modern theory of evolution, what was the role of mutations and sexual reproduction in this process?

A population of warblers lives in a forest. Which of these events would cause an evolutionary change in the warbler population, yet most likely does not involve natural selection?

In many animal species, males attract female mates with behaviors such as singing, dancing, or giving a gift. As explained by Darwin’s theory of natural selection, are these behaviors examples of adaptations?

Two students are reading an article about the evidence of the endosymbiotic theory. As they are reading, they have drawn images of what they believe to be occurring on index cards. The two students are engaging in a discussion on how the index cards should be ordered to accurately show the evolution of eukaryotic cells.

Student A claims the order should be B, E, D, A, C. Their reasoning is that since the small circles without lines in the index cards represent chloroplasts, photosynthesizing organisms evolved before aerobic organisms.

Student B claims the order should be B, A, C, E, D. Their reasoning is that since the small ovals with lines in the index cards represent mitochondria, respiratory organisms evolved before photosynthesizing organisms

Use the diagram to answer the question. Which statement below is accurate about the discussion above?

_____ and _____ are organelles that arose from endosymbiosis

Which type of cell does NOT contain membrane-bound organelles?

Which of the following is evidence to support the endosymbiotic theory?

The theory of Endosymbiosis explains

Which types of organisms developed first due to the early environmental conditions on Earth?

One of the accepted scientific theories describing the origin of life on Earth is known as chemical evolution. According to this theory, which of the following events would need to occur first for life to evolve?

The Miller-Urey experiment of 1953 was designed to test the hypothesis that lightning supplied the energy needed to turn atmospheric gases into organic molecules such as amino acids. Which of the following describes why the Miller-Urey theory is widely accepted today?

The diagram below shows a proposed theory of the origin of eukaryotic cells, called endosymbiosis.

Which of the following explains why cells that contained mitochondria-like organelles had an evolutionary advantage?

Fossil evidence suggests life on Earth arrived

How are mitochondria and chloroplasts like bacteria cells?

A bat wing and a butterfly wing are both used for flying but they are made differently. What type of structure is this?

A human arm and a whale fin have similar bone structure but the whale fin is used for swimming and the arm is used for reaching and grabbing. What type of structures are these?

Which of the pictures above would be examples of homologous structures? (pick 2)

What type of evidence is shown with the diagram above?

Which answer best describes macroevolution?

The evolution of an ancestral species into an array of species that occupy different niches

What is convergent evolution?

Sharks and dolphins both have streamlined bodies that allow them to move through water efficiently, this is an example of which type of evolution?

In convergent evolution, organisms share physical similarities because they 

 What type of evolution is demonstrated in this photo?

Cichlid fishes in lakes of the East African Rift. The lakes in this area are believed to support and sustain about 2,000 different species of these fish, each with different ecological and morphological characteristics such as body size. These lakes form a fragmented landscape that bio-geographically isolates the different species of cichlid fish from one another, allowing them, and many of the organisms they live with, to evolve separately.

Humans are causing extiction in which ways?