Key Words (3.4.8)

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Allele
a variant/form of a gene
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Allele Frequency
The no. of times an allele occurs within the gene pool
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Co-dominance
conditions in which both alleles for one gene in a heterozygous organism contribute to the phenotype
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Diploid
cells in which the nucleus contains two sets of chromosomes
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Dominant
an allele that is always expressed in the phenotype
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Gene
length of DNA on a chromosome normally coding for a particular length of polypeptide
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Gene Pool
total no. of alleles in a particular population out a specific time
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Genotype
the genetic composition of an organism
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Haploid
cells that contain only a single copy of each chromosome (e.g. gametes)
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Heterozygous
condition in which the alleles of a particular gene are different in a chromosome
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Homozygous
condition in which the alleles of a particular gene are identical
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Mutation
a change in the sequence of bases of DNA
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Phenotype
the characteristics of an organisms, often visible, from both its geneotype and the effects of the environment
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Recessive
an allele only available in the phenotype if homozgous
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Other cards in this set

Card 2

Front

The no. of times an allele occurs within the gene pool

Back

Allele Frequency

Card 3

Front

conditions in which both alleles for one gene in a heterozygous organism contribute to the phenotype

Back

Preview of the back of card 3

Card 4

Front

cells in which the nucleus contains two sets of chromosomes

Back

Preview of the back of card 4

Card 5

Front

an allele that is always expressed in the phenotype

Back

Preview of the back of card 5
View more cards

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