Genetics and Traits
This describes an allele that is expressed whenever it is present.
What is dominant?
This is the original source of energy for most ecosystems.
This is defined as change in allele frequencies of a population over time.
What is evolution?
This is the formula for the metabolic reaction that occurs in chloroplasts.
What is 6CO2 + 6H2O --> C6H12O6 + 6O2?
Also acceptable: What is carbon dioxide and water react to make glucose and oxygen?
This variable is intentionally changed in an experiment.
What is the independent variable?
This term describes having two different alleles for a trait.
What is heterozygous?
These organisms produce their own food.
What are producers?
(or autotrophs)
This process favors individuals with beneficial traits that help them to survive and reproduce.
What is natural selection?
This is the organelle that generates ATP through the Kreb's Cycle and the Electron Transport Chain during Cellular Respiration.
What is the mitochondria?
This variable is measured in an experiment.
What is the dependent variable?
This is the most likely phenotypic outcome (percentage) of a cross between two heterozygous parents.
What is 75% dominant and 25% recessive?
This is the most immediate effect on consumers when producer populations decrease.
What is consumers decrease?
This explains why pesticide resistance increases in a population over time.
What is resistant individuals survive and reproduce, passing on the resistance gene?
Without light, the light dependent reactions of photosynthesis would be unable to occur, preventing this second chain of reactions from producing glucose.
What is the Calvin Cycle (light independent reactions)?
This is the most appropriate action when experimental results are inconsistent.
What is repeat the experiment?
This explains why a trait can skip a generation and reappear later.
What is a recessive allele?
This is the most likely long-term effect of removing a predator from an ecosystem.
What is prey increases followed by resource depletion?
This type of population is most likely to survive a sudden environmental change.
What is a population with genetic variation?
A scientist blocks the function of mitochondria in a group of cells and measures ATP levels over time. This is the most likely result observed in the experiment.
What are decreased ATP levels?
This is required to support a valid scientific conclusion.
What is evidence?
This is the most likely type of mutation if it does not change the observable trait.
What is a silent mutation?
This trophic level is least impacted by energy loss in a food chain.
What are producers?
This characteristic of banana populations made Gros Michel bananas highly vulnerable to Panama Disease because all individuals responded the same way to infection. Ultimately, it led to their replacement on the commercial market with the less susceptible Cavendish Bananas.
What is a lack of genetic variation (cloning)?
In an experiment, cells are given a chemical that inhibits enzymes involved in ATP production. This is the most likely effect on cellular transportation.
What is a decrease in active transport?
This is the biggest issue when multiple variables are changed at once in an experiment.
What is results cannot be clearly interpreted? (You don't know what caused any change in the dependent variable.)