AQA Biology Unit 4

Description

A Levels Biology 4 Flashcards on AQA Biology Unit 4, created by Stormageddon on 02/03/2014.
Stormageddon
Flashcards by Stormageddon, updated more than 1 year ago
Stormageddon
Created by Stormageddon over 10 years ago
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Resource summary

Question Answer
Gene A section of DNA which codes for a protein
Allele A particular form of a gene
Dominant allele Always presents itself in the phenotype
Recessive allele Only expressed in the phenotype when homozygous/there's 2 of them
Phenotype The observable physical characteristics of the genotype + the environmental factors
Co-dominance Both alleles are always expressed in the phenotype
Hardy Weinberg principles The population is isolated The population is large There is no selection There are no mutations Mating is random
The Hardy Weinberg Equations p² + 2pq + q² = 1 p + q = 1
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