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100

What three words do you need to form a hypothesis

If, then, and because

100

What are the inputs of photosynthesis

sunlight water and carbon

100

What is a gene

A gene is a part of DNA that affects a trait

100

What is the fossil record?

  • The fossil record is a collection of fossils that are placed in chronological order.
100

What is a behavioral adaptation?

A behavioral adaptation is a behavior or activity performed by an organism that increases its fitness.

200

A molecule made of two atoms

A diatomic molecule

200

What are the outputs of photosynthesis

Oxygen, glucose

200

What is a protein?

Proteins are machine-like molecules that can carry out specific chemical reactions in a cell.

200

What are the main statements of the theory of evolution?

  • Species generally produce more offspring than can survive (overproduction).
  • Individuals belonging to the same species almost always have different physical traits (variation).
  • Individuals will compete for resources when they are scarce. Competition happens between different species and between individuals of the same species.
  • The traits that are favored by natural selection are those that involve the organism being more fit to survive in their current environment.
  • Adaptations are those traits that increase an individual’s ability to survive in their environment.
200


What are physical adaptations?

A physical adaptation is a modification that is made to an organism’s physical structure. These types of adaptations increase an organism’s fitness.

300

makes up one atom in a water molecule

oxygen

300


What did scientists Wilkins and Franklin contribute to the discovery of DNA?

Wilkins and Franklin were able to take X-ray images of DNA molecules. These images were later used to determine the structure of DNA.

300

What does homozygous mean

Homozygous is a genotype composed of two identical alleles

300


How does natural selection work?

  • Natural selection is a process in which organisms with a greater fitness tend to survive and produce more offspring.
  • Natural selection is based on the following:
    • overproduction
    • variation
    • competition
    • adaptation


Your answer should include:

  • Species produce more offspring than can survive.
  • Individuals of a species are different from each other.
  • When resources are scarce, individuals will compete for them.
  • Competition happens between different species and between individuals belonging to the same species.
  • The variation within a species that increases the ability to survive in the particular environment (adaptation) is the one that nature will select for.
300

What is a symbiotic relationship?

A symbiotic relationship is a relationship between different organisms that live together in a community or ecosystem.