Vocab
Body structures that are similar in function, but not in structure.
Analogous structure.
What is an example of vestigial structures?
The human appendix.
Important ideas about selective breeding: Interview with Penny.
They are working for better hooves in there cattle than the breed is in Europe. They also look for plevic readings in bulls and heifers. Heavy muscled cows are born by c-sections because they are bigger than normal size.
What is the definition of artificial selection?
The way organisms have changed over time due to human influence/control.
What is embryo development?
The process where a fertilized egg, called a zygote, rapidly divides and differentiates into specialized cells.
Similar in structure but different in function.
Homologous structure.
What is a example of analogous structures?
The wings of a fly and fins of a penguin.
Important ideas about selective breeding: Reducing environmental impact.
They use artificial insemination. They have a higher yield on meat than-non heavily muscled cattle.
What is the definition of natural selection?
A process by which the environmental influences the distribution of trait variables within a population over many generations.
What is a common ancestor?
An organism that is shared by two or more different lineages.
Serve no function but were useful structures in earlier ancestors.
Vestigial structure.
What is a example of homologous structures?
The forelimbs of different vertebrates, like an arm of a human, and a flipper of a whale.
Important ideas about selective breeding: Interview with wilbur.
They look for disposition and longevity in cattle. Longevity is how long the animal is in your herd. it gives you more heat. You get more meat but less calories.
what is the definition of variation?
Different versions of a trait within a species.
Choosing something (as being the best or most suitable).
Selection
The process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.
What is a example of artificial selection?
The development of different dog breeds.
Compare and Contrast gene modification and selective breeding.
Gone modification: The DNA of an organism is altered by adding, removing, or editing a gene. Very precise. Requires DNA understanding.
Both: Improves traits in organisms that benefit us
Selective breeding: Takes many generations. Used for over 10,000 years.
What is the definition of gene modification?
The process of changing the DNA of an organism by adding a desirable gene or removing an unwanted one.
When no more of a species are alive on Earth.
Extinction
The evolutionary process whereby an organism becomes better able to live in its habitat or habitats.
Adaptions.
What is a example of natural selection?
A peppered moth.
How long did selective breeding take?
Many generation.
What is the definition of selective breeding?
When animals or plants are purposely selected to breed for a desired trait.
Qualities or attributes (physical or behavior) that can be used to identity an organism.
Trait