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26 Cards in this Set
- Front
- Back
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What is the Phenotype of an organism? |
An organism's expressed physical traits. |
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What is the Genotype of an organism? |
An organisms genetic makeup |
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What does Heterozygous mean? |
An organism that has two different alleys for a trait. Ex: Rr |
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If the two alleles are different, what will happen? |
The dominant allele will be expressed, while the recessive allele will have no noticeable effect on the organism. |
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What sex chromosomes do females have? |
XX
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What sex chromosomes do males have?
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XY
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What are some examples of recessive inherited disorders?
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Cystic Fibrosis, Sickle cell disease. |
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What are somatic cells? |
All the cells in your body EXCEPT for your sex cells |
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What are Gametic cells? |
All the sex cells in your body |
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What is the enzyme that separates the two strands on DNA? |
RNA Polymerase |
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What makes evolution possible? |
Genetic Variation |
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What is Microevolution?
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The change in allele frequencies over generations |
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What is evolution on its smallest scale? |
Microevolution |
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What is the only source of new genes and alleles? |
Mutations |
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What are Point Mutations? |
Changes in one basic gene |
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What is Phylogeny? |
The evolutionary history of a species or group of related species. |
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What do Phylogenies show? |
Evolutionary relationships |
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Define Taxonomy |
An organisation system to divide species into similar characteristics |
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What is Binomial Nomenclature? |
A two part naming system for organisms. |
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Define Homologous structure |
Similarities in animal's bone structures that are not related |
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What is an example of a homologous structure? |
A dog's paw is very similar to a whale's flipper. |
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What uses DNA and other molecular data to determine evolutionary relationships? |
Molecular Systematics |
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Give an example of an organism with radial symmetry |
Jelly fish
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Give an example of Bilateral Symmetry
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Humans, lobsters, lions.
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Give an example of an animal with no symmetry
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A sea sponge |
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List four characteristics of all Chordata |
Notochord, dorsal, pharyngeal clefts, tail. |
