The genetic constitution of an organism. It describes all the alleles that an organism has. The genotype determines the limits within which the characteristics of an individual may vary.
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Phenotype
The observable or biochemical characteristics of an organism. It is the result of the interaction between the expression of the genotype and the environment. The environment can alter an organisms phenotype.
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Gene
Is a length of DNA, that is, a sequence of nucleotide bases, that normally code for a particular polypeptide.
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Locus
The position of a gene on a particular DNA molecule.
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Allele
It is one of the different forms of a gene.
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Homozygous
When the allele for each of the chromosomes is the same.
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Heterozygous
Where the 2 alleles are different
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Dominant
The allele of the heterozygote that expresses itself in the phenotype.
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Recessive
The one that is not expressed.
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Homozygous dominant
A homozygous organism with two dominant alleles.
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Homozygous recessive
A homozygous organism with two recessive alleles
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Codominence
A form of dominance where the alleles of a gene pair in a heterozygous are fully expressed. This results in offspring with a phenotype that is neither recessive nor dominant.
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Multiple alleles
Where a gene has more than two allelic forms.
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Other cards in this set
Card 2
Front
The observable or biochemical characteristics of an organism. It is the result of the interaction between the expression of the genotype and the environment. The environment can alter an organisms phenotype.
Back
Phenotype
Card 3
Front
Is a length of DNA, that is, a sequence of nucleotide bases, that normally code for a particular polypeptide.
Back
Card 4
Front
The position of a gene on a particular DNA molecule.
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