Biology GCSE Inheritance Terminology

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  • Created by: Rhys Owen
  • Created on: 11-04-13 13:14
Chromosome
A unit of DNA which has 100s or 1000s of genes
1 of 9
Gene
Part of a chromosome which controls a characteristic or trait
2 of 9
Allele
When a specific gene has more than one form
3 of 9
Dominant Allele
The allele of a gene that is always expressed in the phenotype of heterozygotes
4 of 9
Recessive allele
The allele that is only expressed when two copies are present
5 of 9
Phenotype
The observable characteristic or trait
6 of 9
Genotype
Which alleles of a gene are present on a chromosome pair
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Homozygous
Where alleles of a gene are identical
8 of 9
Heterozygous
Where alleles of a gene are different
9 of 9

Other cards in this set

Card 2

Front

Part of a chromosome which controls a characteristic or trait

Back

Gene

Card 3

Front

When a specific gene has more than one form

Back

Preview of the back of card 3

Card 4

Front

The allele of a gene that is always expressed in the phenotype of heterozygotes

Back

Preview of the back of card 4

Card 5

Front

The allele that is only expressed when two copies are present

Back

Preview of the back of card 5
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