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A-level Biology
> 18.3 Natural selection > Flashcards
18.3 Natural selection Flashcards
Study These Flashcards
Study These Flashcards
A-level Biology
(64 decks)
11.1 Overview of photosynthesis
11.2 The light-dependent reaction
11.3 The light-independent reaction
12.1 Glycolysis
12.2 Link reaction and Krebs cycle
12.3 Oxidative phosphorylation
12.4 Anaerobic respiration
13.1 Food chains and energy transfer
13.2 Energy transfer and productivity
13.3 Nutrient cycles
13.4 Use of natural and artificial fertilisers
13.5 Environmental issues concerning use of nitrogen-containing fertilisers
14.1 Survival and response
14.2 Plant growth factors
14.3 A reflex arc
14.4 Receptors
14.5 Control of heart rate
15.1 Neurones and nervous coordination
15.2 The nerve impulse
15.3 Passage of an action potential
15.4 Speed of the nerve impulse
15.5 Structure and function of synapses
15.6 Transmission across a synapse
15.7 Structure of skeletal muscle
15.8 Contraction of skeletal muscle
16.1 Principles of homeostasis
16.2 Feedback mechanisms
16.3 Hormones and the regulation of blood glucose concentration
16.4 Diabetes and its control
16.5 Control of blood water potential - structure of the nephron
16.6 Role of the nephron in osmoregulation
16.7 The role of hormones in osmoregulation
17.1 Studying inheritance
17.2 Monohybrid inheritance
17.3 Probability and genetic crosses
17.4 Dihybrid inheritance
17.5 Codominance and multiple alleles
17.6 Sex-linkage
17.7 Autosomal linkage
17.8 Epistasis
17.9 The chi-squared (x^2) test
18.1 Population genetics
18.2 Variations in phenotypes
18.3 Natural selection
18.4 Effects of different forums of selection on evolution
18.5 Isolation and speciation
19.1 Populations in ecosystems
19.2 Variation in population size
19.3 Competition
19.4 Predation
19.5 Investigating populations
19.6 Succession
19.7 Conservation of habitats
20.1 Gene mutations
20.2 Stem cells and totipotency
20.3 Regulation of transcription and translation
20.4 Epigenetic control of gene expression
20.5 Gene expression and cancer
20.6 Genome projects
21.1 Producing DNA fragments
21.2 In vivo gene cloning - the use of vectors
21.3 In vitro gene cloning - the polymerase chain reaction
21.4 Locating genes, genetic screening and counselling
21.5 Genetic fingerprinting
