AQA A Level Biology復習筆記7.2.2 Gene Pools & Allele Frequency
Gene Pools & Allele Frequency Gene pools The?phenotype?of an organism is dependent on its?genotype?and the environmental influence on the organism Members of the?same species?will have t...
AQA A Level Biology復習筆記7.1.6 The Chi-squared Test
Predicting Inheritance: Chi-squared Test The?difference between expected and observed results?in experiments can be statistically significant or insignificant (happened by chance) If the dif...
AQA A Level Biology復習筆記7.1.5 Investigating Genetic Ratios
Apparatus & Techniques: Investigating Genetic Ratios Known information about genotypes, phenotypes and the process of meiosis can be used to make?predictions?about the phenotypes of offs...
AQA A Level Biology復習筆記7.1.4 Predicting Inheritance: Test Crosses
Predicting Inheritance: Test Crosses A test cross can be used to?deduce the?genotype?of an unknown individual that is expressing a dominant?phenotype The individual in question is crossed wi...
AQA A Level Biology復習筆記7.1.3 Predicting Inheritance: Dihybrid Crosses
Dihybrid Crosses Monohybrid crosses look at how the alleles of one gene transfer across generations Dihybrid crosses look at how the alleles of?two genes?transfer across generations The gene...
AQA A Level Biology復習筆記7.1.2 Predicting Inheritance: Monohybrid Crosses
Monohybrid Crosses Monohybrid inheritance looks at how the?alleles for a single gene are passed on from one generation to the next Known information about the genotypes, phenotypes and the p...
AQA A Level Biology復習筆記6.4.11 Control of Blood Water Potential
Osmoregulation The control of the?water potential?of body fluids is known as?osmoregulation Osmoregulation is a key part of?homeostasis Specialised?sensory neurones, known as?osmoreceptors, ...
AQA A Level Biology復習筆記6.4.10 The Function of the Nephron
Ultrafiltration The nephron is the?functional unit?of the kidney – the nephrons are responsible for the?formation of urine The process of urine formation in the kidneys occurs in?two stages:...
AQA A Level Biology復習筆記6.4.9 The Structure of the Nephron
Structure of the Kidney and the Nephron Humans have?two?kidneys The kidneys are responsible for carrying out two very important functions: As an?osmoregulatory organ?-?they regulate the wate...
AQA A Level Biology復習筆記6.4.8 Calculating the Concentration of Glucose in Urine
Required Practical: Producing a Dilution Series and Calibration Curve An alternative version of Benedict’s solution can be used to carry out a?quantitative?test on an unknown?urine sample?to...
AQA A Level Biology復習筆記6.4.7 Diabetes
The Causes of Diabetes There are over 3 million people suffering from diabetes in the UK Diabetes is a condition in which the homeostatic control of blood glucose has failed or deteriorated ...
AQA A Level Biology復習筆記6.4.6 Control of Blood Glucose Concentration
The Role of the Liver in the Conversion Between Glycogen & Glucose The liver plays a vital role in the conversion between glycogen and glucose The conversion between these molecules help...
