Genetics, Evolution and Taxonomy
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each of the black spaces below before clicking
on it to display the answer.
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| Dominant | An allele that is able to mask or hide another allele. Represented by a capital letter (i.e. R, T, S)
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| Recessive | An allele that is hidden by another allele. Represented by a lowercase letter(i.e. r, t, s)
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| Incomplete Dominance | When two different phenotypes combine to form a new phenotype. (i.e. Red and White flowers breed to form Pink)
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| Codominance | When two different phenotypes combine and both traits are present (i.e. speckled, striped, or spotted)
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| Heterozygous | A gene that contains two different alleles(i.e. Rr)
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| Homozygous | A gene that contains two of the same allele (i.e. RR or rr)
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| Allele | A version of a trait/gene (R or r). One is inherited from each parent.
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| Natural Selection | A gradual process in which favorable traits are passed on from generation to generation to ensure survival and reproductive success of the species.
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| Adaptations | A trait of an organism that is functional to the organism and is obtained through natural selection.
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| Genetic Drift | A change in population due to a random event.
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| Gene Flow | A change in a population due to migration (movement) of individuals into and out of the population.
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| Offspring | The product of reproduction for two parents. (i.e. children)
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| Genotype | The genetic makeup of a particular characteristic in an organism.
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| Phenotype | The physical appearance of a particular characteristic in an organism.
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| Ancestor | A parent, grandparent, great grandparent etc. Anyone from whom an organism has inherited traits.
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| Descendant | A child, grandchild, great grandchild etc. Anyone whom an organism has contributed traits to.
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| Common Ancestry | When two or more organisms have similar inherited traits derived from a single organism.
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| Homology | Similarities among organisms due to common ancestry.
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| Fossil | The preserved remains of a dead organism. (bones, molds, casts, teeth)
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| Survive | To remain alive. Important for the species as a whole.
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| Reproduce | The ability to create offspring. Important for the species as a whole.
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| Gene Frequency | The percentage of a certain allele within a population (i.e. how many blond, brown, or red hair alleles)
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| Taxonomy | A classification system for all living organisms based on shared characteristics.
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| Dichotomous Key | A key designed to help classify organisms by giving a set of sorting options that result in the name of the organism.
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| Species | The basic unit of taxonomic groups. Members within a species are able to breed and produce offspring.
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| Embryo | An unborn or unhatched offspring that is still developing.
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| Cladogram | A diagram used to show the relationships between organisms. Similar to a family tree.
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Created by:
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