BRAINCAKEDirectional Selection
The phenotype of an individual is an observable characteristic of that individual. This may be anatomical, physiological, behavioural or biochemical.
In any population, individuals possess a variety of phenotypes, but most individuals will have an average phenotype while fewer will have phenotypes to the left or to the right of the mean.
Sign in free to see the rest of this lesson, the R.E.C.I.P.E. recall steps and the quiz
BrainCake is free. Make an account in seconds and pick up where this page stops.
Key terms in this lesson
- gene
- A length of DNA that codes for a polypeptide or a functional RNA molecule, at a specific locus on a chromosome.
- allele
- One of the different versions of a gene, arising by mutation, that occupy the same locus on homologous chromosomes.
- gene pool
- The complete range of alleles present in a population at a given time.
More in Genetic Diversity
- Independent Segregation of Chromatids
- Number of Chromosome Combinations
- Genetic Diversity
- Natural Selection
- Peppered Moths
- Types of Selection
- Antibiotic Resistance
- Stabilising Selection
All 19 lessons in Genetic Diversity · All AQA AS-level Biology topics