Adaptation
Thick fur on a bear is what type of adaptation
Structural
What is variation?
Why would a plant have long roots
to absorb water deep down in dry areas
Where are genes located?
a species of birds had a large beak to eat large seeds, but all the plants that produced large seeds died off and only small seeds were available. would having a large beak be an advantage or disadvantage?
Disadvantage.. They would have a hard time eating smaller seeds.
A chameleon's has specialized cells that allow it to change colors and camouflage with its environment. What type of adaptation is this?
Physiological
Give 3 examples of inherited traits
Eye color, height, face shape, fur color
Why would a plant have thorns?
to ward off animals eating it
Genes control the expression of
inherited traits
Where do rabbits get their fur color?
coded in their genes
Burrowing into the ground to avoid the heat is an example of
behavioral adaptation
Give 3 examples of acquired traits
language, food preferences, ears pierced, tattoos, hair cuts, holes in a leaf
Why do two of the same species have different traits?
They have adapted to different environments over time
Where are chromosomes found in a cell
Nucleus
State three ways organisms can become extinct.
- Change in environment
- Destruction of habitat
- Outbreak of disease
- Introduction of new predators or prey
Sudden changes in the environment can lead to increased competition as organisms fight to survive. Which organisms will be more likely to survive?
The ones with the most useful adaptations for the new environment.
you share some of the same genes
What would cause a species to become extinct?
A change in the environment that the species does not have adaptations to survive in
Genes are segments of
DNA
What happened to the migratory monarch butterflies over time?
Their average wing size grew
Give two examples of adaptations which could help a rabbit to survive in the wild.
Large ears to hear predators
Strong legs to jump quickly away from predators
fur color that camouflages to its environment
Explain why variation is important for a species survival
It allows for adaptations to occur
What is the name of the curve drawn on a histogram?
Normal distribution
Why do we share characteristics with both our mother and father?
We receive 23 chromosome from our mother and 23 chromosome from our father, so we receive genes from both
Describe the process of natural selection
1) There is variation in a population
2) The organisms with the most suitable adaptations are more likely to survive. This is the survival of the fittest
3) These organisms will survive
4) The organisms will reproduce and the genes for the useful adaptations will be passed onto their offspring