GCSE Inheritance Flashcards
1
Q
Define allele
A
Different versions of the same gene
2
Q
Define genotype
A
The combinations of alleles that a person has inherited - represented as letters
3
Q
Define phenotype
A
What a person looks like: determined by genotype and environment - description (e.g tall, brown hair)
4
Q
Define dominant
A
The allele that will always be expressed if it is present in the genotype (only needs to be inherited by one parent)
5
Q
Define recessive
A
The allele that will only be expressed if an individual is homozygous for it (e.g has two copies of the allele). this has to be inherited from both parents.
6
Q
Show a homozygous dominant pair
A
AA
7
Q
Show a heterozygous pair
A
Bb
8
Q
Show a homozygous recessive pair
A
dd
