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12 Cards in this Set
- Front
- Back
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What is a gene? |
A sequence of bases on a DNA molecule that codes for a protein, which results in a characteristic. |
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What is an Allele? |
One or more alternative versions of the same gene. |
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What is a Genotype? |
The genetic constitution of an organism. |
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What is a Phenotype? |
The expression of the genotype and its interaction with its environment. |
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What is a Dominant allele? |
An allele who's characteristic appears in the phenotype even if there is only one copy. |
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What is a Recessive allele? |
An allele who's characteristics only appears in the phenotype if two copy's are present. |
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What is a Codominant set of alleles? |
Alleles that are both expressed in the phenotype. |
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What is a Locus? |
The fixed position of a gene on a chromosome. |
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What is a Homozygote? |
An organisms that carries two copies of the same allele. |
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What is a Heterozygous? |
An organisms that carries two different alleles. |
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What is Monohybrid Inheritance? |
The inheritance of a single characteristic controlled by different alleles. |
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What are sex linked characteristics? |
In mammals females have 2 X chromosomes and males have an X and a Y chromosome. ( XX XY) An characteristic is said to be sex linked when an allele that codes for it is located on a sex chromosome. Because males only have one X if an allele is carried on the X chromosome they will express it even if its recessive. |
