20,345
edits
Changes
Created page with "==Key Stage 4== ===Meaning=== A '''Recessive allele''' is an allele which can only be expressed in the phenotype when there are two copies of that allele. ===Abou..."
==Key Stage 4==
===Meaning===
A '''Recessive allele''' is an [[allele]] which can only be expressed in the [[phenotype]] when there are two copies of that [[allele]].
===About Dominant Alleles===
: When a [[genotype]] includes one [[Dominant Allele|dominant allele]] and one [[Recessive Allele|recessive allele]] the physical appearance of the person will be based on the [[Dominant Allele|dominant allele]].
: When there are two copies of the [[Recessive Allele|recessive allele]] the physical appearance of the person will be based on the '''recessive allele'''.
: In a [[Punnett Square]] or [[Genetic Cross Diagram]] '''dominant alleles''' are written with a capital letter while the [[Recessive Allele|recessive alleles]] are written with a lower case letter.
===Meaning===
A '''Recessive allele''' is an [[allele]] which can only be expressed in the [[phenotype]] when there are two copies of that [[allele]].
===About Dominant Alleles===
: When a [[genotype]] includes one [[Dominant Allele|dominant allele]] and one [[Recessive Allele|recessive allele]] the physical appearance of the person will be based on the [[Dominant Allele|dominant allele]].
: When there are two copies of the [[Recessive Allele|recessive allele]] the physical appearance of the person will be based on the '''recessive allele'''.
: In a [[Punnett Square]] or [[Genetic Cross Diagram]] '''dominant alleles''' are written with a capital letter while the [[Recessive Allele|recessive alleles]] are written with a lower case letter.