Inheritance & Variation of Traits
What is passed from parents to offspring?
What are traits?
Who developed the theory of natural selection?
Who is Charles Darwin?
What is the first step of the engineering design process?
What is identifying or defining the problem?
The observable characteristics of an organism.
What is phenotype?
A change in DNA sequence.
What is a mutation?
What structure contains genetic information?
What is DNA?
What is the process by which organisms better adapted to their environment survive and reproduce?
What is natural selection?
What is a model or sample version of a design called?
What is a prototype?
The genetic makeup of an organism.
What is genotype?
The variety of different traits within a population.
What is variation?
What is a different form of a gene called?
What is an allele?
What evidence comes from preserved remains of ancient organisms?
What are fossils?
Engineers use this process to improve designs based on test results.
What is redesign (iteration)?
An allele that masks another allele.
What is dominant?
The use of scientific knowledge to solve problems.
What is technology?
If an organism has two different alleles for a trait, it is called what?
What is heterozygous?
What is it called when a species changes over time?
What is evolution?
What are limits on a design called?
What are constraints?
An allele that is hidden when a dominant allele is present.
What is recessive?
A factor that can affect the outcome of an experiment and should be kept the same.
What is a controlled variable?
What is the probability of two heterozygous parents (Tt × Tt) having an offspring with the recessive trait?
What is 25%?
What type of structures have similar anatomy but different functions because of common ancestry?
What are homologous structures?
What is the difference between a criterion and a constraint?
A criterion is something the design must accomplish, while a constraint is a limitation the design must work within.
The passing of traits from parents to offspring.
What is heredity?
A possible explanation that can be tested through investigation.
What is a hypothesis?