Investigation 1
What does the fossil record tell us about how life changed overtime?
The fossil record helps us understand the story of life on Earth and how it has changed over millions of years.
On a cladogram, what do the nodes represent?
Organisms have ________ suited to their environment to survive and reproduce.
Adaptations
What is gene therapy?
When the good genes of an organism are copied and transferred in the DNA of someone that has a virus.
Guess what
CHICKEN BUTTT. If you got that right that team gets free extra points 😘
What are 2 types of fossils?
What is a gene and how many proteins can genes code for?
A gene is the code for a specific protein. Genes can code for 1 protein.
What is natural selection?
The best suited for a specific environment survive and reproduce to pass on their positive mutations.
What is a GMO?
It is when genetic material is introduced into an organism that humans use for food.
What is random and what is not?
Mutations are random, natural selection is not.
Why is fossil record be incomplete? (3 possible answers)
- there were times fossils did not form
-there are stills fossils yet to be found
What is DNA?
DNA is the base of genes and chromosomes. It is where all your genetic information is organized to make you unique.
Species change overtime due to processes like natural selection.
What is a transgenic organism?
It is an organism that has altered DNA. Scientists add a gene from another species to create a transgenic animal.
What is an adaptation?
Something that an organism does to adapt to its environment.
What does the fossil record tell us about the history of life on earth?
The fossil records tell us about the history of life by showing how organisms have changed overtime and how they relate to one another.
What leads to variation in a populaton?
Genetics and random mutations.
How do populations change overtime?
Populations change overtime due to natural selection, genetic mutations, and environmental changes.
What is genetic engineering?
Its a technology that transfers genes between organisms.
When does natural selection occur?
When changes in the environment lead to changes in traits in the population.
How can we explain why all of this diversity on earth exists?
We can explain that diversity exists because of evolution and different species that breed and make a different animal.
How can a model help us understand the relationships among organisms?
A model can help us understand the relationships among organisms by comparing.
How do genetic mutations lead to variation in a population?
Genetic mutations create changes in an organisms DNA, this leads to new traits. Different traits in a population leads to variation.
What is artificial selection?
When people decided what desirable traits should be passed on, find an organism that has those traits, and breeds them.
What does a fossil record reveal?
The relationships between ancient and modern organisms.