Exam 1: Darwins Finches: Evolution, Genomes, and Genes

In the phrase, 'ABC1 is involved in transcriptional regulation', ABC1 refers to a gene.

Which of the following bases are found in DNA? Please select all that apply.

Beak shape difference in Galapagos finches was one of the earliest observations supporting evolutionary theory. The recent identification of ALX1 as the likely gene responsible for these differences was the culmination of a research history that has drawn on several of the Great Ideas in biology. Match each Great Idea to the relevant evidence underlying the discovery of ALX1. -Evolution by natural selection

Which phrase describes the process that led to the development of different beaks in Darwin's finches?

What type of protein controls when and where genes are expressed?

Match the missing words in the following phrase. An observable trait is termed the [A] whereas the genetic information underlying a trait is the [B]. Genetic information is held as [C], and the full set of genetic information in an organism is known as a [D].

Beak shape difference in Galapagos finches was one of the earliest observations supporting evolutionary theory. The recent identification of ALX1 as the likely gene responsible for these differences was the culmination of a research history that has drawn on several of the Great Ideas in biology. Match each Great Idea to the relevant evidence underlying the discovery of ALX1. -The gene as the unit of heredity

The Cape Verde Islands and the Galapagos Islands have very different species despite their very similar geological and climatic conditions. What did Darwin suggest explained these differences?

Which important observation in the Galapagos Islands led to Darwin's development of evolutionary theory?

What evidence supported the hypothesis that differences in the ALX1 gene were responsible for beak differences in Darwin's finches? Please select all that apply.

Blunt beaks in finches in the Galapagos Islands are in the ancestral condition.

Which observation about species in the Galapagos Islands was important for Darwin's development of evolutionary theory?

Beak shape difference in Galapagos finches was one of the earliest observations supporting evolutionary theory. The recent identification of ALX1 as the likely gene responsible for these differences was the culmination of a research history that has drawn on several of the Great Ideas in biology. Match each Great Idea to the relevant evidence underlying the discovery of ALX1. -The cell as the basic unit of living systems

Which of the following explain why divergence and fixation of traits can occur more rapidly on islands compared to other geographical locations? Please select all that apply.

Scientists identified several DNA regions that potentially held the sequence that contributed to the different beak shapes in Darwin's finches. What was the next step used to determine which region might be responsible?

The entire DNA sequence of an organism can be determined, and different organisms have many differences in sequence between them. (There are many differences even between members of the same species.) What would be the best way for geneticists to find out which DNA regions were important for a particular trait difference - for example, beak shape in Darwin's finches?

Match the missing words in the following phrase. Darwin's finches developed different beak shapes and sizes on different islands. The original bird [A] that colonized the islands was genetically [B]. This meant that, although birds in the original population were [C], individual birds had slightly different beaks. Food sources differed between islands. Birds with beaks that were better suited to obtaining food on a particular island had [D] survival and reproduction rates, and the number of birds with suboptimal beaks [E] relative to the number of birds with well-suited beaks. Over evolutionary time, the beak shape became fixed in each [F].

Beak shape difference in Galapagos finches was one of the earliest observations supporting evolutionary theory. The recent identification of ALX1 as the likely gene responsible for these differences was the culmination of a research history that has drawn on several of the Great Ideas in biology. Match each Great Idea to the relevant evidence underlying the discovery of ALX1. -Life as chemistry