GCSE BIOLOGY AQA Inheritance. EXAM REVISION QUESTIONS WITH
VERIFIED SOLUTIONS LATEST 2025 UPDATE.
Phenotype - ANSWER- The observable characteristics of an organism.
What factors affect an organisms phenotype? - ANSWER- Genes, the environment or a
combination of both
Gene - ANSWER- A section of a molecule of DNA that codes for a specific protein
Allele - ANSWER- An alternative form of a gene
Genotype - ANSWER- genetic makeup of an individual
Dominant allele - ANSWER- The characteristic that is expressed in the phenotype even if only
one of the alleles is inherited
Recessive allele - ANSWER- The characteristic that is expressed in the phenotype only if both
alleles are inherited
Heterozygous - ANSWER- The genotype where one of each alleles is present - dominant and
recessive
Homozygous - ANSWER- The genotype where both of the same alleles are present - could be
both dominant or both recessive
Genome - ANSWER- All the DNA in an organism
VERIFIED SOLUTIONS LATEST 2025 UPDATE.
Phenotype - ANSWER- The observable characteristics of an organism.
What factors affect an organisms phenotype? - ANSWER- Genes, the environment or a
combination of both
Gene - ANSWER- A section of a molecule of DNA that codes for a specific protein
Allele - ANSWER- An alternative form of a gene
Genotype - ANSWER- genetic makeup of an individual
Dominant allele - ANSWER- The characteristic that is expressed in the phenotype even if only
one of the alleles is inherited
Recessive allele - ANSWER- The characteristic that is expressed in the phenotype only if both
alleles are inherited
Heterozygous - ANSWER- The genotype where one of each alleles is present - dominant and
recessive
Homozygous - ANSWER- The genotype where both of the same alleles are present - could be
both dominant or both recessive
Genome - ANSWER- All the DNA in an organism