Genetics

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  • Created by: Lil5
  • Created on: 15-01-18 12:53
Variation
Any difference between cells, individual organisms, or groups of organisms of any species caused either by genetic differences (genotypic variation) or by the effect of environmental factors on the expression of the genetic potentials (phenotypic var
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Continuous variation
A characteristic that can take any value within a range, e.g. height.
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Monogenic characteristic
A trait produced by the effect of a gene or an allele.
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Discontinuous variation
A characteristic that can only result in certain discrete values, e.g. blood type.
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Polygenic characteristic
A trait that is controlled by a group of nonallelic genes (called polygene)
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Gene
A section of DNA that contains the complete sequences of bases (codons) to code for a protein.
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Alleles
Different versions of the same gene.
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Recessive allele
Version of a gene that will only be expressed if two copies of this allele are present in an organism.
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Dominant Allele
Version of the gene that will always be expressed if present.
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Co Dominant Allele
When different alleles of a gene are equally dominant and both are expressed in the phenotype.
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Phenotype
Observable characteristics of an organism.
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Genotype
Genetic makeup of an organism.
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Monohybrid inheritance
A characteristic inherited on a single gene.
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Dihybrid inheritance
A characteristic inherited on two genes.
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Sex linkage genes
Genes carried on the sex chromosomes.
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Carrier
A person who has one copy of a recessive allele coding for a genetically inherited condition.
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Somatic cell
'Normal' body cell
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Gamete
Sex cell
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Chromosome
Structures that consist of DNA & genetic material
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Locus
The position of a specific gene occupies on a chromosome
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Homozygous
Having two identical alleles for the same gene
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Heterozygous
Having two different alleles for the same gene
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Other cards in this set

Card 2

Front

A characteristic that can take any value within a range, e.g. height.

Back

Continuous variation

Card 3

Front

A trait produced by the effect of a gene or an allele.

Back

Preview of the back of card 3

Card 4

Front

A characteristic that can only result in certain discrete values, e.g. blood type.

Back

Preview of the back of card 4

Card 5

Front

A trait that is controlled by a group of nonallelic genes (called polygene)

Back

Preview of the back of card 5
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