In our embryo lab, the first 6 stages of different organisms looked the same before developing further. What does this mean they may share?
A common ancestor
Three types of rabbits (dark brown fur, light brown fur, and white fur) live in a meadow amongst tall grasses they fed on. A drought hit and a lot of the grasses died leaving just the soil and some plants. What change in the rabbit population would you expect? (Jot down thoughts to discuss)
White rabbits would decline rapidly being exposed to predators. Brown rabbits would decline slightly due to food shortage but be able to survive better.
Name one benefit of genetic engineering and/or artificial selection?
Answers will vary
What type of genetic engineering helps people with genetic disorders by replacing defective genes?
Gene Therapy
A trait that helps an organism survive in its environment is called an _________.
Adaptation
Structures that look similar (like the arm bones of a human and wing bones of a bat) show that organisms may share a common ancestor. What are these structures called?
Homologous Structures
1. Variation in Species 2. Inheritable traits
3. Favorable traits 4. Time
All four components above are part of what process?
Natural Selection
A labradoodle has traits of both a poodle and a lab. One desired trait of humans by this mix is that they do not shed. What type of gene technology or genetic engineering has occurred?
Selective Breeding
The gradual change in a species over time is called what?
Evolution
What scientist is known as the Father of Genetics and worked with pea plants to determine how traits were passed from parent to offspring?
Gregor Mendel
The Punnett Square above represents eye color. Brown eyes are dominant to blue. What are the odds that their child will have blue eyes?
25% or 1/4
Why do species of animals look different today than they did many generations ago?
As environment changes, favorable traits are passed along. Survival of the fittest.
When DNA is manipulated to create an almost exact replica of an organism, this is called ???
Cloning
According to the diagram, Mammal-like reptiles are closely related to what?
Synapsids and/or Mammals
What scientist is known for his work with finches and the process of evolution?
Charles Darwin
What it called when a parent carries to same forms of a trait, BB or bb?
Homozygous
Cloning, Selective Breeding, and GMO's are all examples of _______________.
Artificial Selection
What does GMO stand for?
Genetically Modified Organism
Name one thing that can be used to help determine evolutionary relationships between species?
Body Structures, DNA, embryonic development
Where can we find the genetic code that makes up an organism?
DNA
What is it called when organisms with favorable traits are able to survive and reproduce to pass on their genes to the next generation?
Natural Selection
If another volcanic eruption occurred and the soil changed to volcanic rock like in location B, what would you expect to change in the mouse population at location A?
The darker mice would survive to reproduce as they are more suited to the new environment. The white mice population would go down.
What do we call a permanent change to our dna that happens at random?
Mutation
What type of mutation help an animal survive in its environment?
Harmful, Beneficial, or Neutral
Beneficial
Give an example of an adaptation. Name the animal, adaptation and whether it is structural or behavioral.
Answers will vary