Adaptations
Natural Selection gives organisms what they need to survive. True or False
False, Natural Selection is the process of getting rid of those that are unfit to survive
What is a population?
A population is a number of individuals in a species that live in the same area at the same time.
True or False, Natural Selection acts on genotypes.
True
Dinosaurs are the founding species of all animals? True or False
False, they are only related to some species of lizards and birds.
Where was Darwin's most notable research conducted?
Galapagos Islands
Natural Selection acts for the good of a species. True or False
False
Do individuals or populations adapt?
Populations adapt
What is Genetic Drift?
Genetic drift is a change in a populations genetics based entirely on random events, such as natural disasters.
What type of evidence for evolution is shown by similar bone structures in different species?
Homologous structures
What species of bird was Darwin most interested in and conducted his research on?
The Galapagos Finch
What type of adaptation helps an organism survive by changing how it acts in its environment?
A behavioral adaptation
What happens to a population when resources become limited?
Competition increases and the growth of the population slows down.
What is Gene Flow?
Gene Flow is the transfer of genetic material (alleles) from one population of organisms to another. Such as when species migrate to a different area and breed with a species there causing new alleles to be introduced to the population
What is a useless anatomical structure that was useful to a species ancient ancestors but it has evolved out of needing it called?
It is called a Vestigial structure
What was Darwin most interested in, in Biology?
Biogeography, the geographic distribution of species
How can Camouflage increase an organisms chance of survival?
It helps the organism blend into its environment to avoid predators and catch prey.
Why is genetic variation important in a population?
It helps populations adapt and survive environmental changes.
What is a mutation?
Mutations are random, permanent changes in an organism's DNA sequence. They introduce entirely new alleles into a population's gene pool.
What is a theory of Evolution?
Some of the theories of evidence for evolution include, comparative anatomy, fossil records, genetics, embryology, and biogeography. Which confirms that all life on Earth shares a common ancestor.
What observations did darwin make about finches on the galapagos islands?
They had a very diversified beak shape and size
What is an adaptation that helps an organism regulate body temperature called?
A Physiological adaptation
What is the largest population in the world?
Ants, which have an estimated 20 quadrillion individuals.
A population of red flowers lives in a valley. Over time, pollen from a nearby population of white flowers is carried into the valley by wind. After several generations, white flowers begin appearing in the valley population more frequently. What evolutionary mechanism is occurring?
Gene Flow
What is the most realistic theory for evolution?
The most realistic theory explaining how these evolutionary changes take place is the theory "The Modern Synthesis" which is a combination of Darwin’s observation that organisms best suited to their environment are more likely to survive and reproduce (Natural Selection) with the mechanisms of Mendelian Genetics.
Why do the Galapagos finches have different beak shape and size depending on where they are on the islands?
The finches have different beak shapes and sizes based on their location because of the food that is available in the region they are located. In an area with large nuts the finches had a larger and more robust beak. In an area with smaller seeds the finches have smaller and thinner beaks.