Genetic definitions

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  • Created by: naima11
  • Created on: 11-02-17 10:49
DNA
DeoNucleicAcid
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Haploid (n)
Cells which contains an unpaired no. of chromosomes eq. sperm and egg cells
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Diploid (2n)
Cells which contain double sets of chromosones
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Gene
A segment of DNA which codes for a specific protein that gives a characteristic eg coloured eyes
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Allele
A different form of the same genev
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Gene Pool
All the alleles of all the genes of all the individuals in a population at any given time
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Allele frequency
No. of times an allele occurs within the same gene pool
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Multiple Alleles
Genes with more than one allele
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Gene locus (loci)
Position of the gene on the chromosone
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Homologous Chromosones
A pair of chromosomes containing the same genes, each derived from one parent
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Homozygous
Alleles which are the same e.g. TT or tt
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Heterozygous
Alleles which are different eg Tt
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Genotype
The alleles that an individual inherits
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Phenotype
The expression of this genetic constitution and its interaction of the environment
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Dominant Allele
Always expressed in the phenotype. the genotype could be heterozygous or homozygous
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Recessive Allele
Only expressed when homozygous
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Co-dominance
Both alleles are expressed in the phenotype
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Monohybrid inheritance
The inheritance of a characteristic controlleed by a single gene
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Dihybrid inheritance
The inheritance of a characteristic controlled by two different genes
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Hardy-Weinberg
Calculates frequency of 2 characteristics controlled by 2 different genes
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Principle
It predicts the proportion of dominant and recessive alleles of a gene in a population
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Other cards in this set

Card 2

Front

Cells which contains an unpaired no. of chromosomes eq. sperm and egg cells

Back

Haploid (n)

Card 3

Front

Cells which contain double sets of chromosones

Back

Preview of the back of card 3

Card 4

Front

A segment of DNA which codes for a specific protein that gives a characteristic eg coloured eyes

Back

Preview of the back of card 4

Card 5

Front

A different form of the same genev

Back

Preview of the back of card 5
View more cards

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